3Com 5124M-TPCL manual Port TX, + RX, + Not Used

Table A-7. 50-Pin Cable Pinouts and Port Assignments (Continued)

Hub	Hub	Hub	Transceiver		Hub	Hub	Hub	Transceiver
		Function/	Function				Function	Func-tion
Port#	Pin#				Port#	Pin#
		Polarity	/Polarity				/Polarity	/Polarity
Port 5	34	RX, +	TX, +	(1)	Port	46	RX, +	TX, + (1)
					11
Port 5	9	RX, -	TX, -	(2)	Port	21	RX, -	TX, - (2)
					11
Port 5	35	TX, +	RX, +	(3)	Port	47	TX, +	RX, + (3)
					11
Port 5	10	TX, -	RX, -	(6)	Port	22	TX, -	RX, - (6)
					11
Port 6	36	RX, +	TX, +	(1)	Port	48	RX, +	TX, + (1)
					12
Port 6	11	RX, -	TX, -	(2)	Port	23	RX, -	TX, - (2)
					12
Port 6	37	TX, +	RX, +	(3)	Port	49	TX, +	RX, + (3)
					12
Port 6	12	TX, -	RX, -	(6)	Port	24	TX, -	RX, - (6)
					12
						50	Not Used	Not Used
						25	Not Used	Not Used

Specifications A - 11