1.Computer supply--it is in stable characteristics, high performance and it is in great reliability, simple, easy to use,Single-Bay HDD Dock 2.External hdd dock--it support 3,5 inch or 2,5 inch laptop hard drive and desktop computer hard drive,2.5 inch Hard Drive Bay 3.3,5 inch hard drive is manufactured with technology to ensure the of the product and can work for a long time,External Hard Drive Docking Station 4.SSD dock--simple plug-in installation design, no need to use tools to disassemble and install the hard disk, quick to use,External Hard Drive Bay Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.