Multiple card slots for kinds of digital memory card: SD, SDHC, SDXC, Mini SD, MMC, RS-MMC, Micro SD, MS, CF, MD, M2, MS Micro, XD Card. * DC big 4pin socket supply power to each USB 3.0 connector up to 900Mah max, insure all your huge current consumption USB devices can work properly. * Built-in PCI-E connector. It"s the final solution for upgrading your PC to USB 3.0 with only several few steps. * Plug-n-play, easy and practical to use.Standard 3.5"" floppy size, easy to install. * Built-in over current protection can protect the devices and host itself effectively.