IBM G52-72361X2 manual Back Panel, Back panel provides the following connectors

MS-7236 Mainboard

Back Panel

The back panel provides the following connectors:

M ouse	Parallel	LAN
			L-In RS-Out
			L-Out CS-Out
Keyboard	COM Port	USB Ports	Mic Surround
			Out

Mouse/Keyboard Connector

The mainboard provides a standard PS/2® mouse/keyboard mini DIN connector for attaching a PS/2® mouse/keyboard. You can plug a PS/2® mouse/keyboard directly into this connector. The connector location and pin assignments are as follows:

			Pin Definition
6	5	PIN	SIGNAL	DESCRIPTION
4	3	1	Mouse/Keyboard Data	Mouse/Keyboard data
		2	NC	Noconnection
		3	GND	Ground
2	1	4	VCC	+5V
PS/2 Mouse / Keyboard		5	Mouse/KeyboardClock	Mouse/Keyboardclock
(6-pin Female)		6	NC	Noconnection

Serial Port Connector: COM Port

The mainboard offers one 9-pin male DIN connector COM Port. It’s a 16550A high speed communication port that send/receive/ 16 bytes FIFOs. You can attach a serial mouse or other serial device directly to it.

1	2	3	4	5		Pin Definition
					PIN	SIGNAL	DESCRIPTION
					1	DCD	Data Carry Detect
					2	SIN	Serial In or Receive Data
					3	SOUT	Serial Out or Transmit Data
	6	7	8	9	4	DTR	Data Terminal Ready)
					5	GND	Ground
9-Pin Male DIN Connector
					6	DSR	Data SetReady
COM Port					7	RTS	Request To Send
					8	CTS	Clear To Send
					9	RI	Ring Indicate

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