40Gbps Transmission SpeedThis NVMe case equips with USB4 (Type-C) output interface and 40Gbps USB4 C-to-C data cable, the read and write speed can reach 3000MB/s when test with Samsung 980 PRO M.2 NVMe SSD and Mac mini (Apple M.2 chipset) by MAIWO, transfer 10GB files in seconds. Safe, stable and reliable. Compatibility & 8TB CapacityThis enclosure supports M.2 NVMe M-Key and B & M-Key 22x80mm solid state drive. Support 8TB capacity expansion. Fully compatible with USB4, Thunderbolt 3/4 and backward compatible with USB3.2/3.1/3.0/2.0, especially designed for Apple M1 M2 Pro/MaxWhen using with Thunderbolt 3, please update your device to latest operation system, and the fastest speed is 20Gbps.