StarTech.com 4 Bay Aluminum Tray Hot Swap Mobile Rack Backplane for 3.5in SAS II/SATA III – 6 Gbps HDD – Connect and hot swap four 3.5in SATA III or SAS II hard drives to your computer system in three 5.25″ bays, with support for SATA 6 Gbps – Tray SATA Backplane – Hot Swap Bay – Backplane – Mobile Rack – SATA 6 Gbps – Key Lock – 70mm Fan TRAY MOBILE RACK BACKPLANE
 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
 Startech HSB4SATSASBA
 Features
 Solid aluminum construction
 Key lock design
 Built-in fan
 4 drive bay design
 Installs in three 5.25″ drive bays
 Tray 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
 Guides & Documents
 Brochure