NVMe has 90% health or better Tested and wiped. Send us a message if you have any questions. PCI Express NVMe 3.1 x4. 2 to PCIe Adapter Part number. PEX4SFF8639 PCI: PCIE 4.0 x4 lane host adapter Compatible with x4 PCIe 4.0 motherboard and backwards compatible with PCIe 3.0 / 2.0 / 1.0.