Intel MB886 CN1 PS/2 Keyboard and PS/2 Mouse Connectors, CN2, J2, J7, J8 COM1/2/3/4 Serial Ports

INSTALLATIONS

CN1: PS/2 Keyboard and PS/2 Mouse Connectors

Mouse (top)

Keyboard (bottom)

Keyboard	Pin #	Mouse
Signal		Signal
Keyboard data	1	Mouse data
N.C.	2	N.C.
GND	3	GND
5V	4	5V
Keyboard clock	5	Mouse clock
N.C.	6	N.C.

CN2, J2, J7, J8: COM1/2/3/4 Serial Ports

CN2 (COM1) is a DB-9 connector, while J2, J7 and J8 are a COM pin-header connectors.

COM1		COM2
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

COM2 is jumper selectable for RS-232, RS-422 and RS-485.

Pin #		Signal Name
	RS-232	R2-422	RS-485
1	DCD	TX-	DATA-
2	RX	TX+	DATA+
3	TX	RX+	NC
4	DTR	RX-	NC
5	Ground	Ground	Ground
6	DSR	RTS-	NC
7	RTS	RTS+	NC
8	CTS	CTS+	NC
9	RI	CTS-	NC
10	NC	NC	NC

14 MB886 User’s Manual