A:Answer 1. While there are 5 RJ-45 jacks on the back of your router, one of them is a WAN jack for connecting to your Cable/DSL modem, leaving 4 LAN jacks to connect wired devices. The range extender gives you an additional 4 LAN jacks to connect to your local network, giving you a grand total of 8 wired Local Area Network connections. Of course, adding additional hubs can increase this amount.
2. Typically, home routers are configured for a Class C network configuration, meaning that you can have up to 254 total devices in your IP address range, but remember that the extender will count as one of those devices.
