1、Wide Compatibility: M.2 PCIe adapter supports both PCIe and SATA protocols, making it compatible with a wide range of M.2 NVME SSDs. It supports B key and M key interfaces for PCIe M.2 NVME based M Key and B plus M Key SSDs. 2、PCIe Interface Compatibility: The NGFF M.2 to PCIe adapter supports PCIe 4x, 8x and 16x interfaces, providing connectivity flexibility. It can be used with full or half expansion cards to ensure compatibility with a wide range of motherboard designs. 3、Suitable For SSDs: Supports M.2 SSDs in sizes 2280mm, 2260mm, 2242mm, 2230mm. Compatible with a wide range of NGFF or NVME SSDs, it is compliant with PCI Express M.2 specification 1.0, SATA 3.0 specification for B key, and PCIe 4X 3.0 specification for M key. 4、Easy Installation: Installing this NGFF M.2 to PCIe adapter card is very simple. It connects 1 B key and 1 M key NGFF SSD to a PCIe 4X motherboard, allowing you to easily expand your storage options. 5、Dual M.2 SSD Support: The NGFF M.2 to PCIe X4 card can support dual M.2 SSDs, one for NVME SSD (M Key) and the other for SATA SSD (B Key). However, it should be noted that it does not support connecting two NVME SSDs or two SATA SSDs.