hi @harrydeparry and welcome you have a barebone clevo NP50PNJ (-M) with a 512GB m.2 SSD PCIe Gen 4x4. you can put one more M.2 SSD PCIe install. Service Manual look here : https://community.medion.com/t5/ERAZER-Gaming/Service-manual-for-E30-Crawler-MD62445/m-p/150001#M2714 bye Fishtown
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