Pin Description
| Pin # | Connector Pin Name | Descriptions | 
| 1 | VeeT | Module Transmitter Ground | 
| 2 | Tx_Fault | Module Transmitter Fault | 
| 3 | Tx_Disable | Transmitter Disable. Turns off transmitter laser output | 
| 4 | SDA | 2-wire Serial Interface Data Line | 
| 5 | SCL | 2-wire Serial Interface Clock | 
| 6 | Mod_ABS | Module Absent. Grounded within the module | 
| 7 | RS0 | Rate Select 0, optionally controls SFP+ module receiver | 
| 8 | Rx_LOS | Receiver Loss of Signal Indication | 
| 9 | RS1 | Rate Select 1, optionally controls SFP+ module transmitter | 
| 10 | VeeR | Module Receiver Ground | 
| 11 | VeeR | Module Receiver Ground | 
| 12 | RD- | Receiver Inverted Data Output | 
| 13 | RD+ | Receiver Non-Inverted Data Output | 
| 14 | VeeR | Module Receiver Ground | 
| 15 | VccR | Module Receiver Power Supply | 
| 16 | VccT | Module Transmitter Power Supply | 
| 17 | VeeT | Module Transmitter Ground | 
| 18 | TD+ | Transmitter Non-Inverted Data Input. AC coupled | 
| 19 | TD- | Transmitter Inverted Data Input. AC coupled | 
| 20 | VeeT | Module Transmitter Ground | 
SFP28 Module Pad Layout
