Table 34: QSFP+ and QSFP28 Optical Module Receptacle Pinouts (continued)
Fiber
5
6
7
8
9
10
11
12
Table 35: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts
Pin
1
2
3
4
5
6
7
8
9
10
11
12
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Signal
Unused
Unused
Unused
Unused
Rx3 (Receive)
Rx2 (Receive)
Rx1 (Receive)
Rx0 (Receive)
Pin
12
11
10
9
8
7
6
5
4
3
2
1
Chapter 2: Site Planning, Preparation, and Specifications
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