Sabrent's 4TB Rocket Q NVMe Solid-State Drive plunges by $135, now $543.50 ( Amazon low) - 9to5Toys
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Best 4TB SSDs for 2021 (M.2 NVMe, 2.5" SATA, External)
Amazon.com: M.2 NVME SSD Enclosure Tool-Free Adapter, Storage Up to 4TB, USB C 3.1 Gen 2 10Gbps to NVME PCIe M-Key(B+M Key) Solid State Drive External Enclosure Support UASP Trim for SSD