Extreme Networks Summit X450a-24tDC Hardware Installation Manual page 166

Technical Specifications
Figure 92 shows the pinouts for a 9-pin to 9-pin (PC-AT) null-modem serial cable.
Figure 92: PC-AT Serial Null-modem Cable Pinouts
Switch
Cable connector: 9-pin female
Screen
TxD
RxD
Ground
RTS
CTS
DSR
DCD
DTR
166
Shell
3
2
5
7
8
6
1
4
PC/Terminal
Cable connector: 25-pin male/female
1 Screen
3 RxD
2 TxD
7 Ground
4 RTS
20 DTR
5 CTS
6 DSR
8 DCD
Summit Family Switches Hardware Installation Guide
25pin