Pin Assignments - H3C S3100V2 Series Installation Manual

Figure 61 Crossover cable
Crossover cable

Pin assignments

Select an Ethernet twisted pair cable according to the RJ-45 Ethernet interface type on your device. An
RJ-45 Ethernet interface can be MDI (for routers and PCs) or MDIX (for switches). For the pinouts of RJ-45
Ethernet interfaces, see
Table 30 RJ-45 MDI interface pinouts
10Base-T/100Base-TX
Pin
Signal
1 Tx+
2 Tx-
3 Rx+
4 Reserved
5 Reserved
6 Rx-
7 Reserved
8 Reserved
Table 31 RJ-45 MDI-X interface pinouts
Pin
1
2
Table 30 and
Function
Send data
Send data
Receive data
—
—
Receive data
—
—
10Base-T/100Base-TX
Signal Function
Rx+ Receive data
Rx- Receive data
1 white/orange
orange
2
white/green
3
4 blue
5
white/blue
6 green
white/brown
7
8
brown
1 white/green
green
2
3
white/orange
4 blue
5 white/blue
orange
6
7
white/brown
8
brown
Table 31.
1000Base-T
Signal
BIDA+
BIDA-
BIDB+
BIDC+
BIDC-
BIDB-
BIDD+
BIDD-
1000Base-T
Signal
BIDB+
BIDB-
61
Function
Bi-directional data cable A+
Bi-directional data cable A+
Bi-directional data cable B+
Bi-directional data cable C+
Bi-directional data cable C
Bi-directional data cable B
Bi-directional data cable D+
Bi-directional data cable D-
Function
Bi-directional data cable B+
Bi-directional data cable B-