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Working on your device while it is turned on may result in electric shock. Make sure to shut down and unplug your device before you begin.
Flip your device over so the bottom panel is facing up.
Slide the lock switch below the bottom right of the battery to the left.
The battery is held in by a latch in the front and tabs in the back.
Lift up the battery, rotating it up and away from you, then pull it out.
To put the battery back in, line it up with the battery bay and the holes for the tabs. Then let the battery rotate towards you and press down until the latch engages and you hear a click.
Unscrew one Phillips #1 screw from the back panel.
The screw is on a spring and attached to the panel. It will pop up, but will not separate from the back panel.
Slide the back panel down and pull it up.
Use a Phillips #1 screw driver to unscrew the black 4 mm Phillips #1 screw on the wireless card.
Use a plastic opening tool to lift the wireless card out of its slot.
In replacing the wireless card, I found it easiest to insert the wireless card and screw down before reattaching the wires. A strong pair of forceps or tweezers helped align the male and female connectors, which are quite small.
Pull the black and white wires up and off of the wireless card.
Remove the wireless card.
WiFi-Direct