ESD270C Portable SSD 250GB TS250GESD270C In the perfect combination of portability and reliability, Transcend's ESD270C is a portable SSD that features fast data transfer rates and solid data integrity. The credit-card size ESD270C fits in your wallet, making it the perfect choice for businesspeople needing to take important files on their many travels. Specifications: Appearance Dimensions 77 mm x 55.7 mm x 9.6 mm (3.03" x 2.19" x 0.38") Weight 35 g (1.23 oz) Color Black Interface USB Type USB Type C to USB Type A/USB Type C to USB Type C Connection Interface USB 3.1 Gen 2 Storage Flash Type 3D NAND flash Capacity 250GB Operating Environment Operating Temperature 0°C (32°F) ~ 70°C (158°F) Operating Voltage 5V Performance Read Speed (Max.) up to 520 MB/s Write Speed (Max.) up to 460 MB/s Warranty Certificate CE/FCC/BSMI/NCC/RCM/EAC Warranty Three-year Limited Warranty Operating System Microsoft Windows 7 Microsoft Windows 8 Microsoft Windows 10 Mac OS X 10.5 or later