3Com 3C16897 8-slot DC Chassis Connectors, lists RJ-45 MDI-X Port Pin-outs, Pinout, 1000BASE-T

				Optical Fiber Cable Connectors 79
Table 55 RJ-45 MDI Port Pin-outs (continued)
Pinout	10BASE-T/100BASE-TX		1000BASE-T
3	Rx+	Receive data	BIDB+	Send data to direction B
4	Reserved	-	BIDC+	Receive data from direction C
5	Reserved	-	BIDC-	Send data to direction C
6	Rx-	Receive data	BIDB-	Receive data from direction B
7	Reserved	-	BIDD+	Send data to direction D
8	Reserved	-	BIDD-	Receive data from direction D

Tx = Send data Rx = Receive data BI = I-directional data.

Table 56 lists RJ-45 MDI-X Port Pin-outs.

Table 56 RJ-45 MDI-X Port Pinouts

Pinout	10BASE-T/100 BASE-TX		1000BASE-T
	Signal	Function	Signal	Function
1	Rx+	Receive data	BIDB+	Send data to direction B
2	Rx-	Receive data	BIDB-	Receive data from direction B
3	Tx+	Send data	BIDA+	Send data to direction A
4	Reserved	-	BIDD+	Receive data from direction D
5	Reserved	-	BIDD-	Send data to direction D
6	Tx-	Send data	BIDA-	Receive data from direction A
7	Reserved	-	BIDC+	Send data to direction C
8	Reserved	-	BIDC-	Receive data from direction C

Optical Fiber Cable Figure 47 illustrates the SC optical fiber cable connector.

Connectors

Figure 47 SC Optical Fiber Connector