. This chip is common in affordable, "no-name" adapters, and while it's generally reliable, getting it to work can sometimes be tricky—especially if it gets stuck acting like a USB drive instead of a network card.
With the right driver and a few tweaks, the humble Realtek 8188GU can still deliver a usable wireless experience for everyday browsing, email, and light streaming. realtek 8188gu wireless lan 80211n usb nic driver
Open your terminal and install build tools: and while it's generally reliable