It may be possible to use an M.2 SSD through and adapter similar to CFexpress : r/XboxSeriesX
Sintech launches a CFexpress adapter to install an external SSD in the Xbox Series X | S - World Today News
I'm pretty sure that the mystery slot on the back of the Xbox Series X is a CFexpress memory card slot. If an ethernet port is about 11.5mm wide then using the
Amazon.com: Sintech CFexpress Type B to M.2 Nvme Card,Compatible with Xbox Series X/S Expansion Memory,Only Support CH SN530 SSD PCIe4.0 : Electronics
CFexpress To SSD M.2 NVME For Xbox Series X/S XSX CFexpress To SN530 1TB Replace | eBay
Conversion board that can connect NVMe M.2 SSD to the CFExpress card slot of Sintech, Xbox Series X | S
Xbox Series X "Proprietary" SSD just uses a standard form factor card slot! - Gaming - Level1Techs Forums
PCIe 4.0 Gen4x2 Storage Expansion Card CFexpress TypeB to SSD M.2 NVMe 2230 Adapter CH SN530 Board SONY Canon R5 Nikon Z6Z7 XBOX|Data Cables| - AliExpress
Modder uses CFexpress adapter to attach Xbox Series NVMe SSD as expandable storage - VideoCardz.com
Your standard SSD might work as an Xbox storage expansion | Ars Technica
Cablecc Type-B CF-Express to NVMe 2230 M.2 M-Key CH SN530 SSD Adapter CFE for Xbox Series X&S PCIe4.0 Expansion Memory Card
Conversion Adapter Lets You Install Short M.2 SSDs Into Xbox Series X, S | Tom's Hardware
XBOX扩展存储M.2转CFexpress - 嘉立创EDA开源硬件平台
Xbox Series X Has a Dedicated Storage Expansion Slot the Right Size for a CFExpress Card
The Xbox Series X Expansion Card: a CFexpress? | ITIGIC
CFexpress To SSD M.2 NVME For Xbox Series X/S XSX CFexpress To SN530 1TB | eBay
CFexpress to M.2 NVMe adapter for Xbox Series Expansion port : r/XboxSeriesX
/cdn.vox-cdn.com/uploads/chorus_asset/file/19619952/Xbox_series_X.jpg "Xbox Series X may get fast expandable storage with CFexpress cards - Polygon")
Xbox Series X may get fast expandable storage with CFexpress cards - Polygon
Modder uses CFexpress adapter to attach Xbox Series NVMe SSD as expandable storage - VideoCardz.com
Xbox Series X Has a Dedicated Storage Expansion Slot the Right Size for a CFExpress Card
NFHK Type-B CF-Express to NVMe 2230 M.2 M-Key CH SN530 SSD Adapter CFE for Xbox Series X&S PCIe4.0 Expansion Memory Card
Modder uses CFexpress adapter to attach Xbox Series NVMe SSD as expandable storage - VideoCardz.com
Modder expands Xbox Series X/S NVMe SSD with CFexpress adapter
Ssd Works Xbox Series | Ssd Cards Xbox Series X | Ssd Xbox X Series Adapter - Xbox X/s - Aliexpress
