Steps1. Connect the antenna cables to the wireless card.Table 24. Antenna-cable color schemeConnectors on thewireless card Antenna-cable color Silkscreen markingMain White MAIN △ (white triangle)Auxiliary Black AUX ▲ (black triangle)2. Place the wireless-card bracket on the wireless card3. Align the notch on the wireless card with the tab on the wireless-card slot (M.2 WLAN).4. Slide the wireless card at an angle into the wireless-card slot (M.2 WLAN).5. Replace the screw (M2x3.5) that secures the wireless-card bracket to the wireless card.Next steps1. Install the hard drive, if applicable.2. Install the side cover.3. Follow the procedure in After working inside your computer.Removing and installing Customer Replaceable Units (CRUs) 45