It may be possible to use an M.2 SSD through and adapter similar to CFexpress : r/XboxSeriesX
![DIY NVME 2230 SSD Card As CFexpress B For XBOX XSX XSS [PA-CFEBM2-D] - $26.99 : Sintech Eshop!, The World of PC Adapter Card](https://pcadapter.cn/image/cache/catalog/m2%20SSD/how%20to%20use%20CFE2M2-D-500x500.jpg "DIY NVME 2230 SSD Card As CFexpress B For XBOX XSX XSS [PA-CFEBM2-D] - $26.99 : Sintech Eshop!, The World of PC Adapter Card")
DIY NVME 2230 SSD Card As CFexpress B For XBOX XSX XSS [PA-CFEBM2-D] - $26.99 : Sintech Eshop!, The World of PC Adapter Card
Here's What's Inside The Xbox Series X Seagate Expansion Card
CFexpress To SSD M.2 NVME For Xbox Series X/S XSX To SN530 1TB Replacing Seagate | eBay
Cfexpress To Ssd M.2 Nvme Xbox Series X/s Xsx Cfexpress Only Support For Western Digital Ch Sn530 1tb - Add On Cards & Controller Panels - AliExpress
Storage Expansion Card For Xbox Series X|s Cfexpress To Ssd M.2 Nvme Adapter Sn530 1tb Expansion Ssd For Xbox - Harddisk & Boxs - AliExpress
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
La tarjeta de expansión de Xbox Series X: ¿una CFexpress? | El Output
Converter SSD Nvme Western Digital WD Ch SN530 Cfexpress B Xbox X S | eBay
Xbox Series X "Proprietary" SSD just uses a standard form factor card slot! - Gaming - Level1Techs Forums
Card Reader CFexpress To SSD M.2 NVME Expansion Card Xbox Series X/S XSX CFexpress Only Support for Western Digital CH SN530 1TB - Newegg.com
PS5 vs. Xbox Series X|S Expansion: How Choice Breeds Confusion
CFexpress To SSD M.2 NVME For Xbox Series X/S XSX CFexpress To SN530 1TB | eBay
Amazon.com: Xiwai CF-Express Type-B to M.2 NVMe 2230 M-Key Adapter CFE for Xbox Series X&S CH SN530 SSD PCIe4.0 Expansion Memory Card : Electronics
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
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
cablecc M.2 NVMe 2230 M-Key SSD to CF-Express Type-B Adapter for Xbox Series X&S CH SN530 SSD PCIe4.0 Expansion Memory Card (Black CFExpress to NVME for Xbox) : Electronics - Amazon.com
Xbox Series X 'mystery slot' expected to fit CFExpress cards - Hardware - News - HEXUS.net
CFexpress to M.2 SSD Hard Drive Conversion For Xbox Series PCIe 4.0 HDD Extension Memory Card Case External Games Accessories| | - AliExpress
CFexpress to M.2 NVMe adapter for Xbox Series Expansion port : r/XboxSeriesX
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2022 New Xbox Series Xsx Xss Cfexpress To M.2 Wear-free Built-in Expansion Card Instead Of Seagate Ssd - Tripods - AliExpress
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
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
For ESXS CFexpress To SSD M.2 NVME Xbox Series X/S XSX CFexpress To SN530 1TB | eBay
