ATX
12x9.6
Improved position of PSU for better air movement, CPU/RAM easier accessible, AT keyboard port replaced with PS/2 mouse/keyboard ports, RAM closer to northbridge and CPU - shorter whires, faster speeds
microATX
9.6x9.6
30% smaller, fits in ATX case though, or smaller microATX cases. Same ports as ATX
ITX
Read Below
miniITX
6.7x6.7
Lower power usage, less heat, passive cooling, less fan noise, miniITX are common, ITX itself is not standard and assumes sizes that aren’t standardized
Proprietary Form Factors - Exist, and created by companies pushing their services and upgrades from authorized dealers. Examples include riser cards, also known as daughter boards which extend the mobo via cables, as well as unique power connections.
Standard Components
Name
Description
USB
For connecting USB devices, often found on the front and/or back
Sound
Most mobos come with onboard sound, and front panel connectors for headphones and microphones
Networking
Most mobos come with one RJ-45 jack for attatching an ethernet cable
Video
Most mobos come with video ports, examples include S-Video, VGA, DVI, DisplayPort, HDMI
RAID
See Definitions
Fans
All mobos require cooling and have connectors for fans found in cases, should be able to control them with software
Expansion Bus
tag:
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