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. The StarTech.com Advantage – Delivers peak drive performance, with support for full SATA III/SAS II data transfer speeds up to 6Gbps – Flexible drive options with support for both SATA and SAS drive interfaces – Helps maintain ideal drive operating temperatures by maximizing heat dissipation and expelling built-up heat, with a vented aluminum housing and built-in fan