Manual

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. Insufcient air ow 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.