CPU
6th or 7th Generation Intel Skylake Dual Core ULV i5-6200U/6300U or i7-6500U/6600U or Intel Kaby Lake Dual Core ULV i5-7200U/7300U or i7-7500U/7600U Processor
Memory Type
PC4-19200 2400MHz DDR4 260pin SO-DIMM Laptop Memory
Standard Memory
up to 32GB
Memory Expansion Slots
2 SO-DIMM slots
USB Ports
Three USB v3.1 Gen-1 (one always on) Type-A Ports and One USB v3.1 Gen-2 Type-C Thunderbolt-3 Port
Card Reader
4-in-1 Integrated SD Card Reader Slot: (SD/SDHC/SDXC/MMC) - Supports UHS-II SD Cards
Original Optical Drives
External Option Only
Original Hard Drives
500GB, 1TB, 2TB 5400RPM or 7200RPM SATA III 6Gb/s Hard Drive
Original Solid State Drives
128GB, 180GB, 192GB, 256GB 2.5" SATA III 6Gb/s Solid State Drive or 128GB, 256GB, 512GB M.2 NGFF (2280) PCIe NVMe 3.0 x4 Solid State Drive or 128GB M.2 NGFF (2242) SATA III 6Gb/s Solid State Drive (The M.2 (2242) is installed in the WWAN slot for secondary storage)
Drive Notes
The Lenovo ThinkPad P51s Laptop Comes in 2 Different Drive Options from Lenovo and Supports Single and Dual Drive Configurations. (One M.2 NGFF (2280) Solid State Drive in a Adapter Bracket and/or One M.2 NGFF (2242) Solid State Drive in the WWAN Slot) or (One 2.5" Solid State Drive or Hard Drive and/or One M.2 NGFF (2242) Solid State Drive in the WWAN Slot) Note: When the M.2 (2280) Drive is installed, the M.2 Drive occupies the 2.5" Drive bay using a adapter bracket that is installed in the 2.5" Drive caddy. If replacing the 2.5" Drive for a M.2 Drive, you will need the M.2 adapter bracket caddy p/n 01AY476 and the PCIe SSD cable p/n 01ER035 for installation. If replacing the M.2 Drive for a 2.5" Drive, you will need the 2.5" Drive caddy (remove from M.2 SSD adapter bracket) and the HDD SATA cable p/n 01ER034 for installation. The M.2 (2280) Drive is PCIe NVMe 3.0 x4 but runs at PCIe NVMe 3.0 x2 speeds due to the M.2 adapter bracket limitations.