![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://i.redd.it/0m84p5se2ac41.png)
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
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Amazon.com: NFHK 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
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Xbox Series X | S XSX XSS CFexpress to M.2 Memory Card Adapter Expansion Card Converter SSD Adapter - AliExpress
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