Xbox Series X/S can use standard SSDs in the expansion card slot, it's claimed

User discovers that other drives can be converted to work in the card’s…

Microsoft's Xbox Series X/S Storage Expansion card is now at its lowest ever price - OC3D

Xbox vs. PlayStation: Which Console Is Better - SOS Support

WD_BLACK C50 Plug & Play Memory Expansion Card for Xbox

Should I buy this $80 SSD for my Xbox Series S? I need more storage and this seems like a pretty great deal. : r/xbox

Xbox Series X and Series S - Wikipedia

Cheaper Xbox Series X/S memory expansion card coming

WD_BLACK 1TB C50 Expansion Card, Officially Licensed for Xbox, Series XS, Plug-and-Play, Quick Resume. NVMe SSD Includes 1 Month Xbox Game Pass Subscription

Whisper quiet and super fast: a hands-on preview with Xbox Series X, Xbox series S/X

Xbox Expansion Card Xbox Series S Storage 1TB 2TB External Gen 4.0 Portable Solid State Drive Xbox Compatible Expansion SSD