Gigabit / Fast Ethernet Switch User's Manual GSD-1020
  - 8 - 
APPENDIX A NETWORKING CONNECTION
A.1 Switch‘s RJ-45 Pin Assignments 
  1000Mbps / 1000BaseT 
Contact  MDI  MDI-X 
1 BI_DA+ BI_DB+ 
2 BI_DA- BI_DB- 
3 BI_DB+ BI_DA+ 
4 BI_DC+ BI_DD+ 
5 BI_DC- BI_DD- 
6 BI_DB- BI_DA- 
7 BI_DD+ BI_DC+ 
8 BI_DD- BI_DC- 
Implicit implementation of the crossover function within a twisted-pair cable, or at a wiring panel, while not 
expressly forbidden, is beyond the scope of this standard. 
A.2 10/100Mbps / 10/100Base-TX 
Contact  MDI  MDI-X 
1 1  3 
2 2  6 
3 3  1 
6 6  2 
A.3 RJ-45 cable pin assignment 
2 1 3 6 
1 
2 
3 
6 
2 1 
3 6 










