1 2U 2.5" SATA/SAS 8-Bay backplane
2 SR650 second& third 8x2.5" or 12x3.5" NVME HDD backplane power cable
3 SR650 8x2.5" HDD backplane signal cable
4 SR550 8x2.5" HDD backplane signal cable
5 SR550 second 8x2.5" HDD backplane power cable, SR650 first 8x3.5", 12x3.5" or 8x2.5" HDD backplane power cable
6 SR550 first 8x2.5" HDD backplane power cable
7 4x1 2.5" HDD filler
8 1x1 2.5" HDD fillers (4)