Cn1: Ps/2 Keyboard And Mouse (Top) Connectors; Usb1: Usb Connector; Cn4: Com1 Db-9 Serial Port - IBT Technologies MB860 User Manual

The above external onboard connectors are described below.

CN1: PS/2 Keyboard and Mouse (top) Connectors

Signal Name
Keyboard data
N.C.
GND
5V
Keyboard clock
N.C.

USB1: USB Connector

USB1 consists of a two stacked USB ports. Refer to the section below for
the respective pin assignments.

CN4: COM1 DB-9 Serial Port

Signal Name
DCD, Data carrier detect
RXD, Receive data
TXD, Transmit data
DTR, Data terminal ready
GND, ground
Keyboard
1
2
3
4
5
6
Pin #
1
2
3
4
Pin #
1
2
3
4
5
MB860 User' s Manual
INSTALLATIONS
Mouse Signal Name
1 Mouse data
2 N.C.
3 GND
4 5V
5 Mouse clock
6 N.C.
Signal Name
Vcc
USB-
USB+
Ground
Pin # Signal Name
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 RI, Ring indicator
10 Not Used
13