User`s manual

INSTALLATIONS
MB860 User’s Manual 13
The above external onboard connectors are described below.
CN1: PS/2 Keyboard and Mouse (top) Connectors
Signal Name Keyboard Mouse Signal Name
Keyboard data 1 1 Mouse data
N.C. 2 2 N.C.
GND 3 3 GND
5V 4 4 5V
Keyboard clock 5 5 Mouse clock
N.C. 6 6 N.C.
USB1: USB Connector
USB1 consists of a two stacked USB ports. Refer to the section below for
the respective pin assignments.
Pin # Signal Name
1 Vcc
2 USB-
3 USB+
4 Ground
CN4: COM1 DB-9 Serial Port
Signal Name Pin # Pin # Signal Name
DCD, Data carrier detect 1 6 DSR, Data set ready
RXD, Receive data 2 7 RTS, Request to send
TXD, Transmit data 3 8 CTS, Clear to send
DTR, Data terminal ready 4 9 RI, Ring indicator
GND, ground 5 10 Not Used