Lenovo Legion Y520 (GTX 1050 Ti) review – the Y-series are finally on the right track
Regarding Lenovo Legion Y520 series (Y520-15IKBN) M.2 PCIe SSD-English Community
Lenovo on 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