Thunderbolt 4 external solid state drive

StarTech 4 Bay Thunderbolt 3 NVMe Enclosure, For M.2 NVMe SSD Drives, 1x DisplayPort Video/ 2x TB3 Downstream

StarTech's 4-bay Thunderbolt 3 NVMe enclosure for M.2 NVMe SSD drives provides fast data transfer, DisplayPort video output, and two downstream Thunderbolt ports.

LaCie Rugged 4TB USB-C Thunderbolt External SSD - Orange Stainless Steel

LaCie Rugged Mini 4TB USB-C External SSD IP54

The LaCie Rugged Mini delivers a massive 4 TB of storage in a compact, shock‑proof shell that resists dust and splashes (IP54). With USB‑C Gen 2×2 it reaches up to 2000 MB/s, making it ideal for fast backups on PC, Mac or iPad.