The Lenovo ThinkPad P15v Gen 2 Laptop Supports Single and Dual Drive Configurations. (Two M.2 NGFF (2280) Solid State Drives) Note: This machine comes with Two M.2 (2280) slots that support Generation 3.0 x4 PCIe NVMe Drives. If installing a M.2 Generation 4.0 x4 PCIe NVMe Drive in a M.2 Generation 3.0 x4 PCIe NVMe slot, the drive will run at Generation 3.0 x4 speeds.