【Lightning-Fast 40Gbps Transfer Speed】Equipped with a USB4 port, this WAVLINK M.2 enclosure delivers blazing-fast data transfer speeds up to 40Gbps for PCIe NVMe SSDs, achieving read and write speeds of up to 3800MB/s (data from WAVLINK Labs). 【Wide Compatibility】Supports M-key and B&M-key PCIe NVMe SSDs in sizes 2280, 2260, 2242, and 2230 (SSD not included). Compatible with Windows 7 or later, for Mac OS 10.5 or later, and Linux. (Note: AHCI SATA SSDs are not supported.) 【Smart Chip & Multiple Protections】Advanced ASM2464PD chip ensures safe and smooth operation, reduces SSD heat generation, supports UASP and Trim for improved speed, and includes S.M.A.R.T. for monitoring, energy saving, and extending SSD lifespan. 【Plug & Play and Tool-Free】This portable enclosure easily fits in a pocket or briefcase, providing ample storage on the go. It supports plug-and-play functionality without additional drivers and features tool-free SSD installation. 【Comprehensive Cooling System】Robust aluminum alloy casing and dual heat-insulating silicone pads ensure optimal SSD protection and efficient heat dissipation. Its sandwich-style cooling system prevents overheating, ensuring stable and smooth data transfer. Specifications: Model: ST401C Transfer Speed: Up to 40Gbps Read/Write Speed: Up to 3800MB/s Supported SSD Types: M-key and B&M-key PCIe NVMe SSDs Supported SSD Sizes: 2280, 2260, 2242, 2230 Interface: USB4 Chip: ASM2464PD Operating Systems: Windows 7 or later, for Mac OS 10.5 or later, Linux