Kanex USB-C to SD Card Reader-Black Add 3 card reader ports to your new MacBook or other USB-C ready computer Read and Write : Micro SD/T-Flash, SD, mini SD, MMC, MMC Plus, RS-MMC, MMC Mobile, MS, MS Pro, MS Duo, and MS Pro Duo Plug & Play, no driver required Fast Data Transfer: 5Gbps 8.25 Inch (21 CM) adapter length