Updated July 21, 2017 Switch off the computer. Unscrew two screws holding the side panel of the computer case. Slide the side panel to open the case. Examine the computer case design and locate an available 3.5-inch bay. Likely it would be in a tray at the bottom of the case. Slide the hard drive into the bay. Insert two screws (4mm) in the holes in the side of the bay and tighten them with a Phillips-head screwdriver. Find an available SATA connector, typically located in the lower right corner of the motherboard Snap one end of the SATA data cable into the motherboard connector. Connect the other end of the SATA data cable to the hard drive. Note: SATA data cable has two identical 7-pin connectors. Find an available Molex connector of the power supply. Connect the 15-pin end (black) of the power cable to the hard drive and insert the 4-pin end (white) into the the power supply Molex connector . Slide the side panel back to close the case. Secure it with the screws. Switch on the computer. BIOS should automatically detect the new hard drive.
