BP-SATA2221B features a unique tray-less 3.5" bay that accommodates dual 2.5" SATA HDD. This unit can be easily installed in any standard 3.5" bay of mini PC, desktop, tower, rack mount server or industrial system. It is a perfect storage extension to your existing system. The unit works efficiently with systems that contain high volume of data by maintaining quick data access and fast data transfer rate. Easy to open latch panel allows quick HDD swapping. Its aluminum housing ensures proper heat dissipation. The unit comes with multiple LED indicators which display individual drive activity.