H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 66)

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Figure 26 Crossover cable
Select an Ethernet twisted pair cable according to the RJ-45 Ethernet port
type on your device. An RJ-45 Ethernet port can be MDI (for routers and
PCs) or MDIX (for switches). Table 21 and Table 22 show their pinouts.
Table 21 RJ-45 MDI port pinouts
Pin
10Base-T/100Base-TX 1000Base-T
Signal Function Signal Function
1 Tx+ Sends data BIDA+ Bi-directional data cable A+
2 Tx- Sends data BIDA- Bi-directional data cable A-
3 Rx+
Receives
data
BIDB+ Bi-directional data cable B+
4 Reserved N/A BIDC+ Bi-directional data cable C+
5 Reserved N/A BIDC- Bi-directional data cable C-