HP J3177A Fiber-Optic Cables, Twisted-Pair Cable Pin Assignments, Twisted-Pair Cross-Over Cable

Cables and Connectors

Fiber-Optic Cables

Twisted-Pair Cable Pin Assignments

Twisted-Pair Straight-Through Cable

Switch End (MDI-X)				Computer, Transceiver, or
				Other MDI Port End
Signal	Pins			Pins	Signal
(receive +)	1			1	(transmit +)
(receive -)	2			2	(transmit -)
(transmit +)	3		3		(receive +)
(transmit -	6	6			(receive -)

Twisted-Pair Cross-Over Cable

Switch End (MDI-X)		Hub or Switch Port, or Other
		MDI-X Port End
Signal	Pins	Pins	Signal
(receive +)	1	6	(transmit -)
(receive -)	2	3	(transmit +)
(transmit +)	3	2	(receive -)
(transmit -)	6	1	(receive +)

Fiber-Optic Cables

Fiber-optic cables connected to an HP fiber-optic transceiver installed in the switch’s transceiver slot must be 1300 nm wavelength, multimode cable conforming to the ISO/IEC 793-2 type B1, and ITU-T G.652 standards. To connect to the HP 100Base-FX Fiber-Optic Transceiver Module, the cables must have SC-type connectors.

Cables and Connectors

A-4