Hi, Unfortunately this won’t work, the cable can split a 30Gb port into 4x10 but not combine ports the other way. Your best option is buy a switch with more 40Gb ports, you could also use a quad port 10Gb NIC in the server and do link aggregation to 4 of the 10Gb ports.
i have a dell force10 s4810, i need to make 5 connections with 40gbs, but this switch have only 4 of them. there are alot of 10gb (available sfp+ ports) can i configure a 40G QSFP+ to 4xSFP+ and achieve a 40gb for 5 servers
Dell force 4810 - 40G QSFP+ to 4xSFP+ to work as one 40gb