Table 34: QSFP+ and QSFP28 Optical Module Receptacle Pinouts
Fiber
2
3
4
5
6
7
8
9
10
11
12
Table 35: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts
Pin
1
2
3
Signal
Tx1 (Transmit)
Tx2 (Transmit)
Tx3 (Transmit)
Unused
Unused
Unused
Unused
Rx3 (Receive)
Rx2 (Receive)
Rx1 (Receive)
Rx0 (Receive)
Pin
12
11
10
(Continued)
78