Transfer rates: SuperSpeed up to 5Gbps, SD Slot: SDXC, SDHC, SD, MMC, RS-MMC, MicroSD Slot: Micro SD, Micro SDXC, Micro SDHC, UHS-I, CF Slot: CompactFlash Type I, Storage Case: 1x SD, 1x MicroSD, 1xCF, Power/activity LED: Yes, Material: ABS plastic. CR309 is a SuperSpeed USB3.0 3-Slot Card Reader offers an easy solution to access and protect your memory cards, including SD, SDHC, SDXC, Micro SD/SDHC/SDXC and CompactFlash cards.