A:Answer Thanks for your question. Looking at the service guide I see this laptop can take the following SSD: 2 TB, M.2 2280, PCIe-NVMe-3 × 4, SS solid-state drive with TLC. This tells me it has a Gen 3 with 4 lanes of data. Here is a link for the Service Guide: http://h10032.www1.hp.com/ctg/Manual/c06952600.pdf