In this guide, I will disassemble a Lenovo ThinkPad P51 laptop. I will remove the service cover in order to upgrade the RAM, SSD and HDD.
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First of all, let’s look at the specifications of this laptop. The Lenovo ThinkPad P51 features a 15.6-inch UHD display, with a 3840×2160 pixels resolution. The workstation runs 64-bit Windows 10 powered by a 3.00 GHz Intel Xeon Processor E3-1505M v6 processor coupled with 32GB DDR4-2400 RAM and 500GB 7200RPM HDD.
Turn off and close the laptop.
Unlock and remove the battery.
Flip over the laptop and loosen the six screws that securing the service cover to the laptop.
The top is SSD holder that comes with the laptop, and the middle is Samsung M.2 NVMe 960 SSD, the bottom is WD 1TB HDD.
After the six screws are loosened, tilt the service cover with the card.
The original HDD is Seagate 500GB, remove the HDD caddy from the original HDD and install it on the new 1TB HDD.
Under the service cover, you can access two RAM modules, two SSD slots, an HDD and a CMOS battery.