The HSB4SATSASBA Removable 4-drive Backplane makes inserting and removing drives fast and easy, by turning three 5. 25\" bays into a hot-swappable interface for up to four 3. 5\" SATA or SAS hard drives (HDD). For added versatility, the hot swap bay can interface with SATA I/II/III and SAS I/II hard drives -- an ideal solution for enterprise system applications. For a quick and secure method of installing and removing drives, the backplane features ejection levers and a key-lock design. To help prevent drive failure, the bay provides drive cooling with a built-in fan and excellent heat dissipation with a vented aluminum enclosure. The HSB4SATSASBA is backed by a Star Tech. com 2-year warranty and free lifetime technical support. Features Solid aluminum construction Key lock design Built-in fan 4 drive bay design Installs in three 5. 25\" drive bays Trayless design for easier hot swapping Support for SATA revision I/II/III (1. 5/3. 0/6. 0 Gbps) Support for SAS revision I/II (3. 0/6. 0 Gbps) Power and Activity LEDs for each drive UL94 - V0 flammability rating Specification Warranty 2 Years Hardware Compatible Drive Types (Type and Rate) SAS & SATA Drive Installation Removable Drive Size 3. 5in Fan Bearing Type Sleeve Bearing Fan(s) Yes Fans 1 - 70 mm Interface SATA SAS Key Lock Yes Number of Drives 4 Number of internal 3. 5 inch bays 4 Performance Max Drive Capacity Currently tested with up to 6TB 7200 RPM hard drives Maximum Data Transfer Rate 6 Gbit/s Connector(s) Drive Connectors 4 - SFF-8482 (29 pin; Data & Power; Internal SAS) Receptacle Host Connectors 2 - SATA Power (15 pin) Receptacle 4 - SATA (7 pin; Data) Receptacle Special Notes / Requirements System and Cable Requirements Flammability rating: UL94 - V0 Physical Characteristics Product Height 124 mm [4. 9 in] Product Length 197 mm [7. 8 in] Product Weight 1. 3 kg [2. 9 lb] Product Width 145 mm [5. 7 in] Indicators LED Indicators 1 - Power LED 1 - Drive 1 Activity LED 1 - Drive 2 Activity LED 1 - Drive 3 Activity LED 1 - Drive