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Lenovo IdeaPad Z400 Wifi
A lot of newer wireless adapters are simply plug and play, which just means that you only need to put the adapter into an available USB port and the system will install the drivers automatically. You are better off buying a common WiFi USB adapter and just plug it in, than to replace any built-in adapter your laptop may have. Buying a USB wireless adapter is quick and painless because all you need to know is the operating system that is installed on your laptop. The WiFi in your laptop, if so equipped, uses a piece of hardware to send and receive signals to and from your router.
Some warnings to watch for in a bad wireless card
- The laptop wireless driver gives errors when installing
- Your WiFi in your Lenovo laptop is unable to connect to the internet
- Your WiFi signal drops for no reason every day
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