I moved my computer station and couldn't disconnect the wireless cable from the modem. So I bought a 50 foot cable and couplers. When they arrived I immediately undid the connectors and plugged them into one end of the modem and plugged in a new cable at the other end. Voila! Now I have an internet stream on my desktop again! I had five in a pack which was good value for money in case family members need to use them they are great!