Thanks for your questions. The datasheet for the Cisco Nexus 31108TC-V has a clear indication that its QSFP28 port supports 4 x 10G, considering that you need to connect to the switch which supports only SFP+ (10G) multimode SR type, so 1) yes, you can use the connection that 40G SR4 transceiver
#48659 with MPO Female to LC UPC Duplex Cable
#66262 2) we recommend that you to use 40G QSFP+ to 4 Duplex LC AOC
#48659 to connect the LC port to the SR module in the custom switch. If you have any questions, please feel free to contact sales@fs.com.
2019年4月10日に***より発表された