Specifications:Brand: FeishuoName: Feishuo ExpansionStorage capacity: 320，500G， 1TB， 2TB， (optional)Connection: USB 3.0Hard drive size: 2.5 inchesMax transfer rate: 120MB/sItem size: 11.7 * 8.0 * 1.48cm / 4.60 * 3.14 * 0.58in (L * W * H)Item weight: 170g / 5.99ozPackage size: 14.5 * 10.5 * 3.2cm / 5.70 * 4.13 * 1.25in (L * W * H)Package weight: 207g / 7.30ozPackage List:1 * Portable hard drive1 * USB 3.0 cable1 * User manualAbout capacity:Since the calculation units of hard disk manufacturers and computer operating syst are different， the capacity display will be different. When producing hard disks， the capacity is calculated according to 1G = 1000M = 1000 * 1000K = 1000 * 1000 * 1000BYTE. However， the computer operating system is binary and calculated according to 1G = 1024M = 1024 * 1024K = 1024 * 1024 * 1024BYTE. For example: The actual capacity is the marked capacity of the hard disk 1000G / 1.024 / 1.024 / 1.024 = 931G (1000 ÷ 1.024 ÷ 1.024 ÷ 1.024)， so the display capacity of a 1TB hard disk is 931G.Complimentary multifunctional high quality hard disk boxShock and drop protection dataSupport system:For MAC OS 10.6.2，Linux，Windows XP/Vista/7/8/10，Andriod(smart TV)Safe，quick and small.The size is only as large as a smart phone， and it can be easily put into your travel bag or carry bag. It is very convenient to carry regardless of travel or mobile office.Four colors availablePurely dazzling and classic， this moment is a beginningFine blasting with aluminum alloyWith precision curves， the hyperboloid arc is created， and the rounded anti-collision design can better protect the movement.More powerful high-performance processing chipTransmission speed improvementstability improvementsafety improvementUSB3.0+UASP high-speed era120MB/S+ reading speed is no longer difficult"USAP is a new transmission protocol developed by USB-IF for serial connection through the USB interfaceThe device provides a large-capacity storage device with a transmission speed of up to 20% and reduces CPU utilizationData delay and waiting time， USAP protocol provides high-performance data transmission between host and device"Compatible with more devices"Support USB3.0 transmission interface， in addition to traditional notebooks and desktop computers，It can also support smart TVs， TV boxes， routers， game consoles PS4，XPOX， and some mobile with OTG function"