Term
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Definition
- Developed by Intel for Pentium systems.
- Has extra power connections for fans and processor and includes a software-accessible power switch.
- Uses a 20-pin P1 power connector with optional 4-pin aux connector.
- 30.5cm x 24.4cm (12in x 9.6in)
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Term
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Definition
- ATX version 2.2; improved.
- 24-pin power connector.
- Supports PCI Express.
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Term
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Definition
- 28.4cm x 20.8cm (11.2in x 8.2in; more compact).
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Term
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Definition
- Smaller to reduce cost.
- 24.4cm x 24.4cm (9.6in^2).
- Smaller power supply and ATX 2.1 case possible.
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Term
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Definition
- Smaller than microATX.
- 22.9cm x 19.1cm (9in x 7.5in).
- Same mounting holes as microATX.
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Term
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Definition
- Up to 7 expansion slots.
- Up to 325.12mm wide.
- Tower, Desktop, and Small form factor possible.
- 24-pin power connector, can use ATX 2.2 (Enhanced ATX) power supply w/ 4-pin aux connector.
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Term
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Definition
- Up to 4 expansion slots.
- Up to 264.16mm wide.
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Term
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Definition
- Up to 2 expansion slots.
- Up to 223.52mm wide.
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Term
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Definition
- Up to 1 expansion slot.
- Up to 203.2mm wide.
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Term
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Definition
- LPX improvement.
- Daughter board on edge of board.
- From 8in x 10in to 9in x 13.6in.
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Term
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Definition
- Oldest, but still in use.
- P8 and P9 power connectors.
- 30.5cm x 33cm (12in x 13in).
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Term
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Definition
- Smaller AT compatible with ATX cases.
- P8 and P9 power connectors.
- 33cm x 22cm (12in x 8.7in).
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