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Sony VGN-CS390D Wifi
Searching for a new adapter is simple due to the fact that all you need to know beforehand is what OS you are running on your laptop. The WiFi in your laptop, if so equipped, uses an adapter in order to talk to your home router. You are better off buying a common WiFi USB adapter and just plug it in, than it is to replace any type of OEM adapter you might have. Most USB wireless adapters are plug-n-play, which means you simply plug it into a USB port and the OS will install the drivers on its own.
Red flags your internal WiFi should need replacing
- Your wireless internet connection drops for no reason over and over again
- The wireless adapter in your Sony laptop is unable to connect to the internet
- The WiFi adapter driver gives errors when installing
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