Asus P5P43TD/USB3 - Manual (Page 31)

ASUS P5P43TD/USB3 1-21
6. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are
available for connecting USB 2.0 devices.
7. USB 3.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are
available for connecting USB 3.0 devices.
8. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are
available for connecting USB 2.0 devices.
9. COM port. This 9-pin COM1 port is for pointing devices or other serial devices.
10. Optical S/PDIF Out port. This port connects an external audio output device via an
optical S/PDIF cable.
11. PS/2 Keyboard port (purple). This port is for a PS/2 keyboard.
Do not forget to connect the fan cables to the fan connectors. Insufficient air flow inside the
system may damage the motherboard components. These are not jumpers! Do not place
jumper caps on the fan connectors!
Only the 4-pin CPU fan and chassis fan support the ASUS Q-FAN 2 feature.
1.10.2 Internal connectors
1. CPU and chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN)
Connect the fan cables to the fan connectors on the motherboard, ensuring that the
black wire of each cable matches the ground pin of the connector.