MaxTech FHX-8100 Specifications, 100 Base-TX Cable Requirements, Hub’s RJ-45 Pin Assignments

Section 5 - Specifications

Network Standard:	IEEE 802.3u Ethernet 100Base-TX Class II Repeater
Transfer rate:	100 Mbps
Topology:	Tree/Star
Access Method:	CSMA/CD, 100 Mbps
Media:	Catagory 5, 2 pair, UTP or STP
Max. cable length:	328 ft. (100 meters)
Ports:	8 RJ-45 jacks
Crossover connector: 1 (port 8)
Auto-partition:	Yes
Dimensions:	10.75” x 6.54” x 1.69”
Certification:	FCC Part 15 Class A
Temperature:	0° C to 40° C (operating)
Humidity:	5% to 95% (operating, non-condensing)
Power:	100-240VAC, 0.4 Amp max., 50/60 Hz

Section 6 - 100 Base-TX Cable Requirements

100Base-TX networks use unshielded or shielded twisted-pair cable and 8-pin RJ- 45 modular connectors. Use 22-26 AWG, 2- or 4-pair, 100 ohm/ft, solid conductor Category 5 cable. Maximum cable length from hub to workstation is 328' (100 m).

Figure 3 Hub’s RJ-45 Pin Assignments

		Pin	Assignment	Assignment
			(MDI-X Port 1 - 8)	(MDI Daisy-Chain Port)
1	8
		1	Input Receive Data +	Output Transmit Data +
		2	Input Receive Data -	Output Transmit Data -
		3	Output Transmit Data +	Input Receive Data +
		6	Output Transmit Data -	Input Receive Data -
		4,5,7,8	Not Used	Not Used

Schematics for both straight and crossover twisted-pair cable are shown below.

		Straight-Through				Crossover
(Hub)		(Adapter)		(Hub)		(Hub)
1	IRD+	1	OTD+	1	IRD+	1	IRD+
2	IRD-	2	OTD-	2	IRD-	2	IRD-
3	OTD+	3	IRD+	3	OTD+	3	OTD+
6	OTD-	6	IRD-	6	OTD-	6	OTD-

Note: A crossover cable is only necessary if you are connecting two hubs which do not have a daisy-chain port available.

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