Dell PowerEdge M420 InfiniScale IV 16+16 Port 40Gb/s InfiniBand Switch for Del - Page 21

21 Appendix C: QSFP Interface 20 GND 21 Rx2n 22 Rx2p 23 GND 24 Rx4n 25 Rx4p 26 GND 27 ModPrsL 28 IntL 29 VccTx 30 Vcc1 31 LPMode 32 GND 33 Tx3p 34 Tx3n 35 GND 36 Tx1p 37 Tx1n 38 GND GND 19 Rx1n 18 Rx1p 17 GND 16 15 Rx3n 14 Rx3p 13 GND 12 SDA 11 SCL 10 Vcc Rx ResetL 9 ModSelL 8 GND 7 Tx4p 6 Tx4n 5 GND 4 Tx2p 3 Tx2n 2 GND 1 Table 5 - InfiniBand QSFP Connector Pinout Connector Connector Pin Number Pin Name Signal Description 1 GND Ground 2 Tx2n Transmitter Inverted Data Input 3 Tx2p Transmitter Non-Inverted Data Input 4 GND Ground 5 Tx4n Transmitter Inverted Data Input 6 Tx4p Transmitter Non-Inverted Data Input 7 GND Ground 8 ModSelL Module Select 9 ResetL Module Reset 10 Vcc Rx +3.3 V Power supply receiver 11 SCL 2-wire serial interface clock 12 SDA 2-wire serial interface data 13 GND Ground 14 Rx3p Receiver Non-Inverted Data Output 15 Rx3n Receiver Inverted Data Output 16 GND Ground 17 Rx1p Receiver Non-Inverted Data Output 18 Rx1n Receiver Inverted Data Output 19 GND Ground 20 GND Ground 21 Rx2n Receiver Inverted Data Output 3 22 Rx2p Receiver Non-Inverted Data Output 3 23 GND Ground 24 Rx4n Receiver Inverted Data Output 3 25 Rx4p Receiver Non-Inverted Data Output 3 26 GND Ground 27 ModPrsL Module Present 28 IntL Interrupt 29 Vcc Tx +3.3 V Power supply transmitter 30 Vcc 1 +3.3 V Power Supply 31 LPMode Low Power Mode 32 GND Ground 33 Tx3p Transmitter Non-Inverted Data Input 34 Tx3n Transmitter Inverted Data Input 35 GND Ground 36 Tx1p Transmitter Non-Inverted Data Input 37 Tx1n Transmitter Inverted Data Input 38 GND Ground Rev 1.1 Mellanox Technologies