Aaeon SBC-557 Manual page 51

Keyboard and PS/2 mouse connector
Pin
1
2
3
4
5
6
Internal keyboard connector (CN8)
Pin
1
2
3
4
5
40 SBC-557 User Manual
Signal
MS CLOCK
KB CLOCK
Vcc
GND
MS DATA
KB DATA
Signal
KB_CLOCK
KB_DATA
N.C.
GND
Vcc
(CN11) (Mini-DIN 6 pins)