Aaeon SBC-670S Manual page 35

KB/PS2 Mouse, the card's keyboard connector, is a 6-pin mini-DIN
connector on the card mounting bracket. The SBC-670S also comes
with an adapter to convert the mini-DIN connector to a PC/AT
keyboard connector and a PS/2 mouse connector.
KB/PS2 MOUSE
The SBC-670S provides a second connector designed for external
keyboard input (KB CON) and mouse input (MS CON).
Pin
1
2
3
4
5
Pin
1
2
3
4
5
Function
KBCLK
KBDATA
NC
KB GND
KB Vcc
Function
MSCLK
MSDATA
NC
KB GND
KB Vcc