KingSpec M2 SSD with Dram 512GB 1TB 2TB M.2 PCIe NVME ssd Solid State Disk Hard Drive for Laptop with Cache High Speed|Internal Solid State Drives| - AliExpress
Lenovo a Twitter: "Hi! Thanks for reaching out. Good question, based on the parts listed in this article https://t.co/VsRcGVhGgI page 66 the Legion Y520 uses M.2 NVMe SSD. Kindly check this link
Čestitamo ime Vpliv lenovo legion y520 ssd slot - suburbanmango.com
Legion Y530: RAM upgrade and maximum supported memory - LenardGunda.com
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Lenovo 80WK001MUS Gaming Laptop Intel Core i7-7700HQ 2.8 GHz 15.6" Windows 10 Home 64-Bit - Newegg.com