Introduction: >to a professional photographer or videographer, memory card’s speed is key to their artworks >now sd4.0 (uhs-ii) technology bring us the amazing speed experience >allows a sd4.0 compatible device records photo or video at maximum 156mbyte/s (fd156), 312mbyte/s (hd312) >however, of course the facts is that different branded sd4.0 >memory cards speeds are different, but still meets the minimum sd4.0 speed specifications >top u3cr01 usb 3.0 sd4.0 card reader benefits from sd4.0 >technology and made out >fastest card reader so far >offers the speeds that professional photographers and videographers need to quickly download 4/2k resolution photos and hd videos >compact and portable, u3cr02 card reader travels easily from the studio to the field and is backward compatible with usb 2.0 interfaces and uhs-i and non-uhs sd cards >u3cr01 supports various types of memory cards, such as sd, sdhc, mini sd (requires mini sd to sd converter), micro sd (t-flash) >also supports high density memory cards (capacity up to 2tb), such as sdxc, ultra-high speed memory cards, sd3.0 uhs-i and the latest generation high speed sd4.0 uhs-ii memory card reader Features: >u3cr01 is usb 3.0 to sd4.0 single lun memory card reader >supports usb3.0/2.0/1.0 standards and supports secure digital v1.0/1.1/2.0/3.0 (uhs-i)/4.0 (uhs-ii) sdhc/sdxc standards >works with latest new mac air by connecting type c to type a connector (not included) and works with the latest new mac air by connecting type c to type a connector (not included) >supports on-the-go via otg cable (otg cable not included) >supports sd, sdhc and sdxc memory card, mini sd memory cards with an adapter (not included), micro sd (t-flash) >supports windows 8.1 instantgo (aoac) >supported os: windows xp/vista/7/8 >apple os: 9/x >linux: all variants (including android 4.X and chrome os) running kernel version 2.X, 3.X with usb mass storage support