Juniper Networks JNP-QSFP-AOCBO-15M kompatibles 40G QSFP+ auf 4x10G SFP+ Breakout Aktives Optisches Kabel (AOC), 15m (49ft)

I've put the breakout cable into use and it worked perfect like pointed out in your web shop. I connected a Dell S4112T with a Dell N1548P and (with a fitting configuration within the switches) the cable worked out of the box as I expected.