Samsung T5 2 TB USB 3.1 Gen 2 (10 Gbps, Type-C) External Solid State Drive (Portable SSD) Deep Black (MU-PA2T0B) : Amazon.co.uk: Computers & Accessories
Amazon.co.jp: Samsung External SSD T5 500GB USB 3.1 Gen 2 Compatible [PS4 Compatible] Authorized Dealer Warranty MU-PA500B/IT : Computers
PS4 Pro - Speedcheck: external Samsung SSD T5 vs. internal HDD (Far Cry 5) - YouTube
The best PS5 external hard drives in 2023 | Tom's Guide
Just bought the Samsung T5 500GB SSD and ran some speed tests against the PS4 slim HDD. Not scientific by any means but got some some interesting results. See comment below. Btw