8-pin "HSSDC" Cable Connector (High Speed Serial Data Connection)
| Pin | Signal name | Comments |
| 1 | +OUT | Fibre channel output |
| 2 | GND | Optional, return for pin 7 |
| 3 | -OUT | Fibre channel output |
| 4 | Module Fault Detect | Optional |
| 5 | Output Disable | Optional |
| 6 | -IN | Fibre channel input |
| 7 | +5V | Optional |
| 8 | +IN | Fibre channel input |
Optional pins 2, 4, 5, and 7 are intended for use with an external optical converter. This is often called a Media Interface Assembly (MIA).
Read more about this topic: Fibre Channel Electrical Interface
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