StarTech.com U.2 to PCIe Adapter for 2.5" U.2 NVMe SSD - SFF-8639 - x4 PCI Express 4.0. Host interface: PCIe, Output interface: U.2, Expansion card standard: PCIe 4.0. Product colour: Red, LED indicators: Activity, Certification: CE, FCC. Width: 122 mm, Depth: 165 mm, Height: 22 mm. Package width: 160 mm, Package depth: 220 mm, Package height: 45 mm. Products per master (outer) case: 40 pc(s), Master (outer) case width: 340 mm, Master (outer) case length: 450 mm