StarTech.com Spare Hard Drive Tray for the DRW110SATBK Mobile Rack Allow multiple 3.5" SATA drives to be used with a single DRW110SATBK installation Maximize performance, with file transfer speeds up to 6Gbps when paired with SATA III HDD and controller Compatible with DRW110SATBK Mobile Rack/Drive Drawers Rubber shock absorbers Support for SATA revision I/II/III (1.5/3.0/6.0 Gbps) Supports 3.5" form factor SATA hard drives Allow multiple 3.5" SATA drives to be used with a single DRW110SATBK installation Backed by a 1 year warranty and free lifetime technical support Compatible with DRW110SATBK Mobile Rack/Drive Drawers 40mm ball bearing cooling fans Rubber shock absorbers Fully supports SATA revision 1/2/3 (1.5/3.0/6.0 Gbps) hard drives and controllers Supports 3.5" form factor SATA hard drives