StarTech HSB4SATSASBA 4 Bay Aluminum Trayless Hot Swap Mobile Rack Backplane for 3.5in SAS II/SATA III - 6 Gbps HDD Color: Black Conversion Tray: 2 x SATA Power (15 pin) Receptacle 4 x SATA (7 pin; Data) Receptacle Mobile Rack Drives Support: 4 x SFF-8482 (29 pin; Data & Power; Internal SAS) Receptacle Mobile Rack Interface: SATA I/II/III/SAS Protection Case: Multiple Drives Compatible Products: 3.5 & 5.25 Specifications: Drive Installation: Removable Fan Bearing Type: Sleeve Bearing Fan: 1 - 70 mm Key Lock: Yes Number of Drives: 4 Number of internal 3.5 inch bays: 4 Max Drive Capacity: Currently tested with up to 6TB 7200 RPM hard drives Maximum Data Transfer Rate: 6 Gbit/s OS Compatibility: OS independent; No software or drivers required System and Cable Requirements: Flammability rating: UL94 - V0 LED Indicators: 1 x Power LED 1 x Drive 1 Activity LED 1 x Drive 2 Activity LED 1 x Drive 3 Activity LED 1 x Dri...