DataTale CR-FD21 Thunderbolt&trade; Multi-Card Reader for SD/SDHC/SDXC UHS-I, UHS-II/CF Cards Thunderbolt&trade; (Up to 10Gbps) Supports 2 x SD cards and 1 x Compact Flash (CF) card simultaneously Compatible with CF Type I/II and all SD memory cards, including UHS-II, UHS-I, Class 10, Class 6, Class 4, SD, SDHC & SDXC Dissipates heat efficiently with aluminum housing Two Year Warranty