M.2 NGFF to Desktop PCIE x4 x8 x16 NVMe SATA Dual SSD PCI Express Adapter Card Features: Good Heat Dissipation Performance, No Speed Reduction: The heat-dissipating PCB can reduce the temperature of the hard disk, achieving a high-speed operation. Good Performance: Connects M.2 NVME and M.2 SATA drive to a desktop computer. Supports Different Sizes of Hard Drives: 22 x 30mm, 22 x 42mm, 22 x 6omm, 22 x 80mm size are supported. Dual-Disk Connector(B-KEY and M-KEY), Dual-Protocol( M.2 NVME protocol and SATA protocol): Fully compatible with PCI-E channel, two M.2 SSD solid-state drives(NVME protocol and SATA protocol), very practical. Please note that the B-Key SATA drive requires the use of a SATA cable (not included). Supports Multiple Systems: For Windows/For Linux/For Mac OS Specifications: Material: ABS + Metal Supported Hard Disk: PCI-E Channel, NVME Protocol, and SATA Protocol M.2 SSD Hard Disks Compliant with M.2 Hard Disk Size: 22 x 30mm, 22 x 42mm, 22 x 6omm, 22 x 80mm M.2 Connector: M-Key and B-Key Suitable Slots: PCI-E X4, X8, X16 Supported System: For Windows/Linux/Mac OS Adapter Card Size: about 12 x 11.3 x 1.9cm/4.7 x 4.4/0.7in Chassis Backplane Bracket Size: about 8.0 x 1.9 x 2.5cm/3.1 x 0.7 x 1.0in Notes: Please allow a slight dimension difference due to different manual measurements. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Package Contents: 1 x Adapter Card