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 StarTech.com 2-year warranty and free lifetime technical support. More from the Manufacturer

• 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