To install a new WiFi Card. Insert the card at a slight angle into the slot, and screw the 1 Philips screw in to hold the card in place. Then insert the antennae into their respective holes gently. Black goes into slot 1 on the card, and gray in slot 2.

WiFi antennae connector tips are very fragile, so insert them carefully and only push into the slot until you hear the click. Do not force them.