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Bus / Standard
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Your choices are...
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ISA / EISA
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Industry standard architecture (ISA) is a standard for I/O buses that was developed in the 1980s. ISA buses can handle 16-bit data transfers at a clock speed of 8 MHz. They are also capable of handling memory under 16 MB. EISA, or Extended ISA, is an enhanced version of the ISA bus. EISA buses run at 8 MHz, are capable of 32-bit data transfers, and can access all memory in the system.
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PCI
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Peripheral component interconnect (PCI) is a local bus system designed for high-end computer systems. PCI buses transfer 32 or 64 bits of data at a clock speed of 33 MHz. They also support 3 to 5 critical peripherals, which are either integrated directly onto the motherboard or added via expansion cards. PCI buses fully support cards that were developed for standard I/O buses.
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PISA
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PISA buses can carry ISA / EISA and PCI bus signals. They use the same type of connectors as EISA buses, but require fewer pins than full PCI connectors. PISA buses have the same dimensions as ISA buses, but are smaller than typical PCI buses. An industrial single-board computer (SBC) with a PISA edge connector can, with a suitable backplane, connect to both ISA and PCI cards in the same system.
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CompactPCI
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Compact PCI (cPCI) is a high-performance industrial bus that uses the electrical standards of the PCI bus and is packaged in a Eurocard. Specifications for the CompactPCI bus are developed and maintained by the PCI Industrial Computers Manufacturers Group (PICMG). cPCI buses are used extensively in systems that require high speed data transfers. Examples include data communication routers and switches, real-time machine control, real-time data acquisition, military systems, etc.
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PXI
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PCI eXtensions for Instrumentation (PXI) is a superset of CompactPCI that adds timing and triggering functions, imposes requirements for documenting environmental tests, and establishes a standard Windows-based software framework.
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VME
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VersaModule Eurocard (VME) is a rugged, 32-bit bus used in industrial, commercial and military applications. Several VME varieties are available.
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VME64
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VME64 is an expanded version of the VME bus that provides 64-bit data transfers and addressing. VME64 is a mechanical and electrical superset of the original VME specification (IEEE-1014-1987). Features include asynchronous transfers, an addressing range between 16 and 40 bits, data path widths between 8 and 64 bits, and a bandwidth of 80 MBps.
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VME64x
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VME64 Extended (VME64x) is an improved version of the VME64 bus that features a 160-pin connector family, 3.3 V power supply pins, bandwidths up to 160 MBps, injector/ejector locking handles and hot swap capability. The VME64x specifications were adopted in 1997 by the VMEbus International Trade Association (VITA) and its standards organization (VSO).
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VME160
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VME160 is the 160 MBps version of the VME320 standard.
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VME320
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VME320 is a modified VMEbus that provides synchronous data transmission and a bandwidth range from 320 MBps to over 500 MBps.
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VXI / MXI
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VME eXtensions for Instrumentation (VXI) was developed by Motorola and other companies in the late 1970s. VXI is a standard for many electronic platforms and defines electrical and mechanical backplane characteristics.
Multisystem eXtension Interface (MXI) is a high-performance communication link that interconnects devices using a flexible cabling scheme. MXI is a general purpose, 32-bit multi-master system bus on a cable. It provides a high-performance way of controlling VXI systems using commercially available desktop computers and workstations. MXI devices can directly access each other's resources by performing simple read and write operations to appropriate address locations. The MXI-2 standard expands the number of signals on a standard MXI cable by exporting all VXI backplane signals such as VXI triggers, interrupt lines and system clocks directly to the cabled bus.
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Other
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Other unlisted bus types.
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Tables:
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VME Speed
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| VMEbus Data Transfer Speeds | | Bus | Maximum Speed | | VMEbus | 40 MBps | | VME64 | 80 MBps | | VME64x | 160 MBps | | VME160 | 160 MBps | | VME320 | | | |
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The form factor of a computer board describes its shape, what types of case can be used to contain it, what types of power supplies are appropriate and the general physical layout of the board.
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Form Factor
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The dimensions of the different form factors are shown in the table at the end of this help page.
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Your choices are...
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Baby AT
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Baby AT is the original IBM motherboard design for PCs. Boards can be up to 8.57" wide by 13.04" deep.
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AT
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This full-size AT motherboard has the same design as the original IBM AT (Baby AT). Boards can be up to 12" wide by 13.8" deep.
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LPX
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LPX was developed by Western Digital in 1987and has several important features, the most distinctive of which is that expansion slots are mounted on a bus riser that connects to the motherboard. Another important feature is the standard placement of connectors in the back of the card. LPX cards are 9” wide and up to 13” deep.
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Mini LPX
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MiniLPX is a smaller version of LPX. MiniLPX cards can be up to 9" wide and up to 11" deep.
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ATX
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ATX combines the best features of the Baby AT and LPX motherboard designs with some new enhancements. The ATX open specifications were released in 1996. ATX cards are 12" inches wide and 9.6" deep.
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Mini ATX
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MiniATX is a smaller version of ATX. MiniATX cards can be up to 11.2" wide and up to 8.2" deep.
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NLX
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NLX is the latest development in desktop motherboard technology. It supports current processor technologies and supports emerging technologies such as AGP, USB, DIMM, etc. NLX cards can by up to 9" wide and up to 13.6" deep.
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3U x 160mm (Size A)
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Size A cards have a height of 100 mm (3U) and a length of 160 mm.
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6U x 160mm (Size B)
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Size B cards have a height of 233 mm (6U) and a length of 160 mm.
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6U x 340mm (Size C)
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Size C cards have a height of 233 mm (6U) and a length of 340 mm.
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9U x 340mm (Size D)
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Size D cards have a height of 360 mm (9U) and a length of 340 mm.
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Other
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Other unlisted form factors such as EBX, PC-104, etc.
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Tables:
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Board Sizes:
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| Type | Width | Height | | Full AT | 12 in | 304.8 mm | 11 - 13 in | 279.4 - 330.2 mm | | Baby AT | 8.5 in | 215.9 mm | 10 - 13 in | 254 - 330.2 mm | | ATX | 12 in | 304.8 mm | 9.6 in | 243.84 mm | | Mini ATX | 11.2 in | 284.48 mm | 8.2 in | 208.28 mm | | LPX | 9 in | 228.6 mm | 11 - 13 in | 279.4 - 330.2 mm | | Mini LPX | 8 - 9 in | 203.2 - 228.6 mm | 10 - 11 in | 254 - 279.4 - | | NLX | 8 - 9 in | 203.2 - 228.6 mm | 10 - 13.6 in | 254 - 345.44 mm | | 3U (Size A) | 6.30 in | 160 mm | 3.94 in | 100 mm | | 6U (Size B) | 6.30 in | 160 mm | 9.17 in | 233 mm | | 6U (Size C) | 13.39 in | 340 mm | 9.17 in | 233 mm | | 9U (Size D) | 13.39 in | 340 mm | 14.17 in | 360 mm | | |
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CPU Socket / Slot Type:
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Your choices are...
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Socket 1
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169 pins, low insertion force (LIF) socket. Pin Grid Array (PGA). Supported processors: 486 SX/SX2, DX/DX2, DX4 OverDrive.
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Socket 2
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238 pins, zero insertion force (ZIF) socket. Pin Grid Array (PGA). Supported processors: 486 SX/SX2, DX/DX2, DX4 OverDrive, 486 Pentium OverDrive.
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Socket 3
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237 pins, low insertion force (LIF) and zero insertion force (ZIF) socket. Pin Grid Array (PGA). Supported processors: 486 SX/SX2, DX/DX2, DX4 OverDrive, 486 Pentium OverDrive, 5x86.
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Socket 4
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273 pins, low insertion force (LIF) and zero insertion force (ZIF) socket. Pin Grid Array (PGA). Supported processors: Pentium 60/66, OverDrive.
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Socket 5
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296 and 320 pins, low insertion force (LIF) and zero insertion force (ZIF) socket. Staggered Pin Grid Array (SPGA). Supported processors: 75-133, OverDrive.
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Socket 6
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235 pins, zero insertion force (ZIF) socket. Pin Grid Array (PGA). This socket was never implemented by the industry. Supported processors: 486 DX4, 486 Pentium Overdrive.
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Socket 7
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296 and 321 pins, low insertion force (LIF) and zero insertion force (ZIF) socket. Staggered Pin Grid Array (SPGA). Supported processors: Pentium 75-266+, MMX, OverDrive, 6x86, K6.
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Socket 8
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387 pins, low insertion force (LIF) and zero insertion force (ZIF) socket. Dual pattern Staggered Pin Grid Array (SPGA). Supported processor: Pentium Pro.
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Socket 370
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370 pins, low insertion force (LIF), and 418 pins, zero insertion force (ZIF) socket. Staggered Pin Grid Array (SPGA). Supported processors: Pentium III 500E, Cyrix III, Celeron 300.
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Socket A
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473 pins, zero insertion force (ZIF) socket. Staggered Pin Grid Array (SPGA). Supported processors: Duron 600, Athlon 750, etc.
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Slot 1
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242 pin SEC/SEPP (Single Edge Contact Cartridge/Single Edge Processor Package) slot. Supported processors: Pentium II MMX, Pentium II Celeron.
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Slot 2
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330 pin SECC (Single Edge Contact Cartridge) slot. Supported processor: Pentium II Xeon.
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Slot A
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242 pin SECC (Single Edge Contact Cartridge) slot. Supported processors: Athlon 500, Athlon 550, Athlon 750, etc.
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Other
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Other, not specified sockets/slots.
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Number of CPU Sockets / Slots:
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Number of processor socket/slot on the board.
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Your choices are...
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One
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One processor socket / slot on the board.
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Two
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Two processors sockets / slots on the board.
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More than 2
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Search Logic:
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Products with the selected attribute will be returned as matches. Leaving or selecting "No Preference" will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Related Links:
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CPU Sockets Chart
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Table of processor sockets.
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30-pin SIMM Sockets:
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Single In-line Memory Module with 30 pins. The capacity of this type of SIMM can be 256 Kb, 1 MB, 4 MB, and 16 MB.
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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72-pin SIMM Sockets:
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Single In-line Memory Module with 72 pins. The capacity of this type of SIMM can be 1, 2, 4, 8, 16, 32, 64, and 128 MBytes.
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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168-pin DIMM Sockets:
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Dual In-line Memory Module with 168 pins. The capacity of this type of SIMM can be 8, 16, 32, 64, 128, and 256 MBytes.
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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A single chip that integrates many basic devices such as the clock generator, system timer, interrupt controller, bus controller, DMA (direct memory access), keyboard controller, memory cache, external buses and some peripherals. A chipset operates at the speed of the bus to which it is connected.
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Chipset Type:
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Your choices are...
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Intel® Chipset
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Family of chipsets manufactured by Intel®. They are classified according to the type of CPU they support.
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VIA Chipset
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Chipset family manufactured by VIA Technology, Inc.
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SiS Chipset
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Chipset series manufactured by Silicon Integrated System Corp (SiS).
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ALi Chipset
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Chipset manufactured by ALi.
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Other
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Related Links:
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Chipset Chart
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ISA Slots
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Backplanes have slots for plugging in ISA cards.
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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PCI Slots
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Backplanes have slots for plugging in PCI cards.
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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PISA Slots
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Backplanes have slots for plugging in PISA cards.
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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CompactPCI / PXI Slots:
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Backplanes have slots for plugging in Compact PCI or PXI cards. with 3U or 6U form factors.
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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VME / VXI / MXI Slots:
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Backplanes have slots for plugging in VME, VXI, or MXI cards with form factors such as 3U, 6U, or 9U.
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Search Logic:
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All matching products will have a value greater than or equal to the specified value.
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Other Slot Type?
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Other unlisted slot types such as EBX, PC/104, etc.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Power Connectors:
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Your choices are...
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AT Standard Power Connector
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Boards support standard AT (P8 and P9, 12-pin) power connectors. They also support PS/2 type power supplies.
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ATX Power Connector
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Boards support standard ATX (20-pin) power connectors for ATX power supplies.
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3.3 Volt Connector
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Boards support 3.3 V logic.
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Terminal Block Connector
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Other
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Search Logic:
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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USB Port?
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Universal Serial Bus. The standard serial bus for low-to-medium speed peripheral device connections to Personal Computers, including keyboards, mice, modems, printers, joysticks, audio functions, monitor controls, etc.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Parallel Interface (PC printer port, Centronics®)?
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A parallel port provides a channel capable of transferring more than one bit simultaneously. A parallel port, among others, can have features such as ECP (Enhanced Capabilities Port) or EPP (Enhanced Parallel Port).
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Serial Interface (RS232, RS422, RS485)?
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A port, or interface, that can be used for serial communication, in which only 1 bit is transmitted at a time.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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On-Board Terminators?
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On-board terminators minimize reflections and interference on the bus.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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Floppy Drive Support?
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Supports floppy drives.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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On-board IDE Channels?
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Integrated Drive Electronics (IDE) is an interface for mass storage with an integrated disk controller. The IDE interface is officially known as ATA (AT Attachment) and it is an ANSI standard. An IDE interface supports different standards for transferring data between the computer and the disk drive (Disk, CD-ROM, etc.): PIO (Programmable Input/Output), DMA (Direct Memory Access), UltraDMA, Bus Mastering, etc.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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On-board Video Controller?
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The board has a video controller.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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On-board SCSI Interface?
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SCSI (Small Computer System Interface) is a parallel interface standard used by Apple Macintosh computers, PCs, and many UNIX systems for attaching peripheral devices to computers.
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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On-board Ethernet Controller?
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The board has a built-in Ethernet Adapter (10Base-T, 10Base-TX, 100Base-T, etc.)
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Search Logic:
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
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