This portable SATA 2.5" USB 3.0 HDD external case supports up to 1T HDD/SSD and provides up to 240M/s high-speed data transmission. With the super speed USB 3.0 interface, get fast transfers back and forth as well for your devices that support it. It is the perfect accessory to protect your external drive well. Perfect for data backup, safely store images, video, data, and files wherever you go for it requires no reboot operation and no additional drives installation during the use. Reverse compatible with USB 2.0 and 1.1. 2.5in SATA USB 3.0 HDD external case, support up to 1T and 7mm/9.5mm HDD/SSD. Compatible for Mac OS system, up to 240M/s data transmission speed. Support hot plug, plug and play. Support system for Windows SE/ME/2000/XP/Vista/7, for Mac 8.6 and above. LED light indicates power and activity status. Some screws are provided, you can either twist the screws after you install your hard drive or just close external case.