Amazon.com: LINKUP - Internal 16G U.2 Cable (85Ω 85ohm PCIe Gen 4 Mini SAS HD to U.2/SFF-8643 to SFF-8639 Cable) with SATA Power - 1.5 Meters/5 feet : Electronics
U.2 - Wikipedia
M.2 Ssd To U.2 Adapter 2in1 M.2 Nvme And Sata-bus Ngff Ssd To Pci-e U.2 Sff-8639 Adapter Pcie M2 Converter For Desktop Computers - Add On Cards & Controller Panels - AliExpress
Amazon.com: U.2 NVMe to MiniSAS Cable with SATA Power Connector for 2.5" U.2 NVMe SSD, SFF-8643 to SFF-8639 Cable SI-CAB40120 : Electronics
Micro Connectors 12G U.2 Cable (HD Mini SAS SFF-8643 to U.2 SFF-8639) w/SATA Power - Micro Center
U.2 SFF-8639 NVMe SSD to M.2 NGFF PCI-e Adapter with Cable - Walmart.com
CableDeconn Oculink SFF-8611 to SFF-8639 U.2 U.3 NVME PCIe PCI-Express Cable 0.5m for SSD with 15Pin SATA Power Cable G0108-Oculink SFF8611-CableDeconn
U.2 vs. M.2 vs. SATA Express Interface Comparison & Speeds | GamersNexus - Gaming PC Builds & Hardware Benchmarks