A Motherboard (sometimes alternatively known as the mainboard, system board, planar board or logic board, or colloquially, a mobo) is the main printed circuit board (PCB) found in computers and other expandable systems. It holds and allows communication between many of the crucial electronic components. Here are complementary connectors of motherboards.

Forward to / Apple / Dell / ECS / HP / HPE pinouts or follow to 32 OLD hardware pinouts.
  • Intel High Definition Audio connector Intel HD Audio analog front panel dongles can support up to two analog audio jacks, each of which signals user connection, or disconnection.
  • Motherboard 2-pin fan connector 
  • Motherboard 3 pin CPU or Case Cooling fan connector 
  • Motherboard 4 pin CPU PWM fan connector For 4-Wire Pulse Width Modulation (PWM) Controlled Fans
  • PC Speaker connector 
  • RS232 serial motherboard header connector RS232 serial is also called COM port
  • USB 2.0/1.1 Header 
  • USB 3.0 Header USB 3.0 is the successor of USB 2.0. USB 3 reduces the time required for data transmission, reduces power consumption, and is backward compatible with USB 2.0
  • USB 3.0 Header to USB 2.0 Header USB 3.0 contains normal USB 2.0 connections. This is commonly for PC cases that have ports that don't match the Available headers. Converting from 3.0 -> 2.0 is flawless, but converting from 2.0 -> 3.0 will make your 3.0 ports active, but will only function at 2.0 speeds.
  • USB header internal connector Used for card-edge bracket additinal USB ports and internal cardreaders. This is very old and does not match most modern mother board usb headers.

Apple Pinouts

Dell Pinouts

ECS Pinouts

HP Pinouts

HPE Pinouts

  • HPE Hard Drive Backplane Power Cable 661361-001 Cable used to connect an extra bay on HPE Generation 8 servers (ML350p G8 for example). Cable part of cable kit 667266-001 containing Hard Drive Power Cable, short SAS cable and dual connectors graphics power cable.

 
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