Docking station hub--the USB transmission interface conforms to the USB 2,0 standard specifications,Two Position Hard Disk Base Hard disk base--the product is made of plastic material, durable and useful,Multi-function Hard Disk Dock Disk clone cards reader--it can read two hard disks and two USB expansion hub interfaces at the same time,Two Position Hard Disk Base Cards reader device--open my computer, you can see the drive letter, and the signal indicator is on when reading the drive,Two Position Hard Disk Base Hard drive disk--two hard disks can be read at the same time, it is a good helper for your computer,Two Position Hard Disk Base