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64Gbps M.2 NVMe To PCI Express 4.0 X8 Slot Extender With Sata Cable R48UL 4.0 M2 NVMe/PCIe X8 Female Riser For LAN RAID SSD Card - AliExpress
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PCIe 4.0 Card Hosts 21 M.2 SSDs: Up To 168TB, 31 GB/s | Tom's Hardware