[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