StarTech.com 4 Drive 3.5in Trayless Hot Swap SATA Mobile Rack Backplane Quickly and easily install or remove hard drives without having to open the chassis with the innovative trayless design Rubber shock absorbers, a solid aluminum construction and 10,000+ insertion rating ensures longevity from both the drives and bay Maximize performance, with file transfer speeds up to 6Gbps when paired with SATA III HDD and controller Holds up to four SATA drives across three 5.25" bays Trayless design: drives are not mounted into separate trays/enclosures Internal rubber shock absorbers Solid aluminum construction 10,000+ insertion rating Quickly and easily install or remove hard drives without having to open the chassis with the innovative trayless design Rubber shock absorbers, a solid aluminum construction and 10,000+ insertion rating ensures longevity from both the drives and bay Backed by a StarTech.com 2-year warranty and free lifetime technical support Holds up to four SATA drives across three 5.25" bays Trayless design: drives are not mounted into separate trays/enclosures Internal rubber shock absorbers Solid aluminum construction 10,000+ insertion rating