Instruction manual

28 PCM-7890 User Manual
USB connector (CN4)
The PCM-7890 provides two USB (Universal Serial Bus)
interfaces, which give complete plug and play, hot attach/detach
for up to 127 external devices. The USB interfaces comply with
USB specification Rev. 1.0, and can be disabled in the system
BIOS setup.
USB connector (CN4)
Pin Function Pin Function
1 Vcc 5 Vcc
2 UD1- 6 UD0-
3 UD1+ 7 UD0+
4 GND 8 GND