If you are looking for a compact rack with flexibility and functionality, we have a convenient enclosure just for you. The ExpressCage MB322SP-B is a portable rack that converts a 5.25” external bay to fit two 2.5” SATA/SAS HDD/SSD (5mm-9.5mm) and includes a 3.5” bay for either a hard drive or a 3.5” device. With the unique tool-less installation design, the ExpressTray Mini allows you to install your 2.5" SATA or SAS HDD/SSD as quickly and easily as a diskless system, while the optional screw holes of the lower tray provide additional stability. The MB322SP-B features a removable dust cover that keeps the front panel closed to block dust particles when the 3.5" bay remains unused or when a 3.5" hard drive is installed. The soft blue LED indicators on each 2.5" drive bay notify you when drives are in use without being overly distracting.