MB322SP-B

2x2.5" SAS/SATA HDD/SSD Mobile Rack +3.5" Slot for External 5.25" Bay

MB324SP-B

4 Bay 2.5" SAS/SATA HDD & SSD Hot Swap Cage for External 5.25" Bay

 
MB326SP-B

6 Bay 2.5” SATA HDD / SSD Hot Swap Cage for External 5.25” Bay