![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 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](https://preview.redd.it/0m84p5se2ac41.png?auto=webp&s=7815c27b993169477fa3a7248ff54489f5d39d74)
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
![Xbox Series X "Proprietary" SSD just uses a standard form factor card slot! - Gaming - Level1Techs Forums Xbox Series X "Proprietary" SSD just uses a standard form factor card slot! - Gaming - Level1Techs Forums](https://forum.level1techs.com/uploads/default/original/4X/1/f/0/1f01e2c5f015849b88e1f86d6a9fb4ac65badca0.jpeg)
Xbox Series X "Proprietary" SSD just uses a standard form factor card slot! - Gaming - Level1Techs Forums
![Sintech launches a CFexpress adapter to install an external SSD in the Xbox Series X | S - World Today News Sintech launches a CFexpress adapter to install an external SSD in the Xbox Series X | S - World Today News](https://elchapuzasinformatico.com/wp-content/uploads/2021/10/Adaptador-M.2-para-XboxSeries-X-S.jpg)
Sintech launches a CFexpress adapter to install an external SSD in the Xbox Series X | S - World Today News
![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: 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](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61uI+yuaSpL.jpg)
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
![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 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](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/51u5Tk6Z1GL.jpg)
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
![Xbox Series X "Proprietary" SSD just uses a standard form factor card slot! - Gaming - Level1Techs Forums Xbox Series X "Proprietary" SSD just uses a standard form factor card slot! - Gaming - Level1Techs Forums](https://forum.level1techs.com/uploads/default/original/4X/b/f/0/bf07a1e12d0f53aaf39dd48657dbd2e4c569db5b.jpeg)
Xbox Series X "Proprietary" SSD just uses a standard form factor card slot! - Gaming - Level1Techs Forums
![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 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](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/518RH6TrK7L._AC_UF1000,1000_QL80_.jpg)
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
![External Solid State Drives For Xbox Series X/S, External Host Hard Drive Conversion Box M.2 Expansion Card Box 32G BandWidth Support PCIE 4.0 Protocol - Walmart.com External Solid State Drives For Xbox Series X/S, External Host Hard Drive Conversion Box M.2 Expansion Card Box 32G BandWidth Support PCIE 4.0 Protocol - Walmart.com](https://i5.walmartimages.com/asr/5db66819-5269-495e-8e94-31b527881b3c.27e99a5d1b82f20f3ed33892c86ad610.jpeg)