WD 2TB My Passport Wireless Pro Portable External Hard Drive - WiFi USB 3.0 - WDBP2P0020BBK-NESN SD 3.0 card reader for fast media offloads Wireless 802.11ac for fast data transfers All-day battery (up to 10 hours) and compatible with windows 10, windows 8.1 or windows 7, mac OS X El capitan, yosemite, mavericks or mountain lion operating systems USB power bank to charge mobile devices USB 3.0 for super-fast transfers Use the convenient USB 2.0 port to easily transfer media from an external USB storage device, like a compatible DSLR or CF card reader Preview RAW images Wirelessly stream 4K videos and view photos with the My Cloud mobile app