Package Dimensions:5.5 L x 1.5 H x 5.5 w. Details: Thinkpad 512GB PCIe NVMe TLC Opal M. 2 SSD supporting PCIe 3.0 interface standard up to 4 lanes shows much faster performance than previous SATA SSDs. Thinkpad 512GB PCIe NVMe TLC Opal M. Package Dimensions: 5.4 x 5.2 x 1.5 inches.