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
WD_Black Xbox Series X/S memory expansion cards confirmed | Eurogamer.net
Cheaper Xbox Series X/S memory expansion card coming | Eurogamer.net
Don't Run Out of Room: How to Upgrade Your Xbox Series X/S Storage | PCMag
Seagate Expansion 2TB Storage Expansion Card for Xbox Series X|S 763649170311 | eBay
Used with Little Scratch) Microsoft Xbox Series X 1TB SSD Video Game Console - 1 Wireless Gaming Controller - 16GB GDDR6 Memory, 8X Cores Zen 2 CPU, RDNA 2 GPU, 802.11AC WiFi,
XBOX Series X/S Host Hard Disk Adapter CFexpress Convert To M.2 SSD Aluminum Alloy
/cdn.vox-cdn.com/uploads/chorus_asset/file/24705824/n7mIxPP.png "Western Digital announces Xbox expandable storage cards, starting at $79.99 - The Verge")
Western Digital announces Xbox expandable storage cards, starting at $79.99 - The Verge
Enthusiasts spotted 512 GB memory expansion cards for Xbox Series X|S
New 2TB and 512GB Seagate Storage Expansion Cards for Xbox Series X|S - Xbox Wire
Seagate 1TB Storage Expansion Card for Xbox Series X|S Internal NVMe SSD Black STJR1000400 - Best Buy
Seagate Storage Expansion Card for Xbox Series X|S Review - StorageReview.com
Seagate SRD0MX0 Storage Expansion Card for Xbox Series X/S - 1TB - Black 763649142950 | eBay
I've Used This Brilliant Xbox Series X Memory Card for Years and It's Never Been Cheaper
Seagate Expansion Card for Xbox Series X/S Review - YouTube
/cdn.vox-cdn.com/uploads/chorus_image/image/66508973/XboxSeriesX_Tech_Ext_StorageAlone_MKT_16x9_RGB.0.jpg "Xbox Series X expandable storage coming with Seagate's custom 1TB cards - Polygon")
Xbox Series X expandable storage coming with Seagate's custom 1TB cards - Polygon
Xbox Series X 1TB Additional Storage Will Cost $219.99 - Game Informer
Amazon.com: Seagate Storage Expansion Card for Xbox Series X|S, 1TB, SSD, NVMe Expansion SSD (STJR1000400) : Electronics
Seagate Storage Expansion Card for Xbox Series X/S 1TB Solid State Drive - NVMe Expansion SSD for Xbox Series X/S - Micro Center
Microsoft Xbox Series X New 1TB SSD Video Game Console - 1 Wireless Controller - 16GB GDDR6 Memory, Black, 8X Cores Zen 2 CPU, RDNA 2 GPU, 802.11AC WiFi, 8K HDR, 4K
Seagate 512GB Solid State Storage Expansion Card for Xbox Series X|S | 78232100 | Lenovo US
Best Xbox Series X hard drive, SSD, and memory card solutions in 2023 | GamesRadar+
Xbox Series X may support CFExpress memory cards
Xbox Series X Developer Kit Teardown Unveils 40 GB GDDR6 Memory, Features 20 Samsung Dies Running at 14 Gbps
