xStack
®
 DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch 
 
40 
 
Appendix B 
Cables and Connectors 
When connecting the Switch to another switch, a bridge or hub, a normal cable is necessary. Please review these products for 
matching cable pin assignment. 
The following diagrams and tables show the standard RJ-45 receptacle/connector and their pin assignments. 
 
Appendix 1- 1. The standard RJ-45 port and connector 
RJ-45 Pin Assignments 
Contact  MDI-X Port  MDI-II Port 
1  RD+ (receive)  TD+ (transmit) 
2 RD- (receive) TD- (transmit) 
3  TD+ (transmit)  RD+ (receive) 
4 1000BASE-T 1000BASE-T 
5 1000BASE-T 1000BASE-T 
6 TD- (transmit) RD- (receive) 
7 1000BASE-T 1000BASE-T 
8 1000BASE-T 1000BASE-T 
Appendix 1- 2. The standard RJ-45 pin assignments