Product materials: aluminum alloy Interface type: SATA interface Transmission interface: USB 3.0 Random accessories: open computer data line hard disk protector screwdriver screw package About speed: USB2.0 transmission speed theory can reach 480Mbps/ s USB3.0 transmission speed theory can reach 5.0Gbps/ s USB3.1 transmission speed theory can reach the value of 10Gbps/ s theory only for reference. Please understand the reasons for affecting the speed Compatible operating system: Windows 98/SE/ME/2000/XP/Vista/ Win7/win8/win10/Mac OS 8.6 or the latest version Product packaging: due to different suppliers, such as parts and packaging changes, does not affect the use of functions and performance The manufacturer does not inform the retail customers one by one, please understand, for strict packaging requirements, please consult the customer service