How do I install a new solid-state drive in my HP ProBook 640 G2?

To replace an SSD: 1. Turn off the computer and disconnect all devices, including power supply. 2. Remove service door, battery, hard drive (if present), WWAN module, WLAN card, optical drive, keyboard, then memory cards. 3. Unscrew 1 M2 screw securing the current SSD. Disconnect the cables first if necessary. Carefully remove the SSD for replacement. Install new SSD by aligning and pressing it firmly into place until secure. Reverse these steps to install a new unit. (Pages 40-45)