The Sapphire snap-in mobile rack is a convenient external removable hard drive system. Come in choice of model with eSATA connection or combination of both eSATA and USB 3.0 connections, hard drive of any capacity can be conveniently added or removed from any system, similar to a tape cassette. With eSATA connection, the hard drive can also be used as bootable device for any system. The Sapphire snap-in mobile rack is constructed in a sturdy light weight anodized aluminum frame for easy transportation and durability in various application environment.