UNITEK Y-3123 2 in 1 USB3.0 3 Ports Hub + SD/TF/M2/CF/MS Card Reader Super Speed UNITEK Y-3123 USB3.0 3 ports hub + SD/TF/M2/CF/MS card reader Support USB hub and card reader function.Support read SD/TF/M2/CF/MS card Support SDXC/SDXC.Support hard drive up to 2TB. Support a data transfer rate up to 5 Gbps.Support different devices working at the same time with no conflict Specialized LED indicator shows working status.Plug and play, hot swap. Backward compatible with USB2.0/1.1 specification. With a power adapter Support Windows 98, 98SE, 2000, ME, XP, Vista, 7 and Mac OS X or higher