Thank you for viewing. Capacity: 320GB, USB external HDD. Bus-powered type, no AC adapter required. The hard disk's health status has been confirmed as normal with CrystalDiskInfo. *Formatted using dedicated software (CrystalDiskInfo) on my computer (Windows 10)* Supported OS: Windows 98/SE/ME/2000/XP/Vista32/64 Win7/Win8/Win10 /Mac OS 8.6 and later Ideally used as an external drive for a computer, but also ideal for TV recording and Blu-ray recording. ★★Please check the following notes if using for TV recording★★ If your TV has a recording function ("External USB HDD" recording function), you can record TV programs by connecting a compatible USB external HDD for PCs. Formatting from the TV side is required after connecting to the TV. *Please refer to your TV's manual.* Due to compatibility issues with cables, cases, or the HDD itself, it may not be compatible with certain TVs and may not connect. 【Product Contents】 ・The case is new and unused. ・The internal HDD is a used HDD. ・Ready to use immediately, no drivers needed. ・Adopts USB 3.0 communication protocol, also compatible with USB 2.0/1.1. ・Supports various USB peripheral devices such as computers, smart TVs, and PS4. 【Accessories】 HDD main unit, HDD case (assembled) USB 3.0 cable x 1 Other capacity HDDs are also on sale, please take a look if you are interested. #External Hard Drive #HDD #hdd #Hard Disk #External HDD #Expansion Storage #Backup #TV Recording #Dubbing #PS4 #USB3.0 #HDD320GB #HDD500GB #HDD640GB #HDD750GB #HDD1000GB #External Portable Hard Disk #USB3.0 Cable