Can You Use Internal And External Wi-Fi Adapters?

Jack from Worthington, OH writes: My laptop has a built-in wireless LAN adapter that I currently use. Can I plug in and use an external adapter (the USB kind) without interfering with my built-in adapter? Will it upset the future use of my internal adapter? What about my encryption and security settings? Answer: The most common complaint in regards to Wi-Fi is related to losing or having unreliable connections. Each...