1Universal for 2.5/3.5 inch hard drive, dualdisk readthrough with larger capacity 2Independent hard disk switch control with lock function, more secure to use 3Equipped with practical dual USB ports, universal for both charging and transmission 4This hard disk mobile rack support 2.5/3.5 SATA1/2/3 hard disk/SSD solid state 5Optical drive extraction box support for Win7/8/10/XP/Vista/OS X 10. Linux system Item Type: Hard disk mobile rack Placement Location: Desktop 5.25 optical drive location Support Hard Disk: 2.5/3.5 SATA1/2/3 hard disk/SSD solid state Transmission Speed: USB3.0: 5gbps theoretical speed, USB2.0: 480mbps theoretical speed Support System: For Win7/8/10/XP/Vista/OS X 10/Linux 1 x Hard Disk Box2 x Pin Line1 x User Manual1 x Accessories Package