To get your Jinco wireless USB adapter working on Windows 7, you'll need the specific driver package provided by the manufacturer. Jinco Marketing hosts a dedicated download portal for their various models, including the popular and JWD series. Direct Download Links (Official)
If you encounter any issues during the driver installation process, here are some common problems and their solutions: jinco wireless usb adapter driver download windows 7 link
After reboot, plug in the adapter. Windows 7 should detect it as “Realtek/Ralink Wireless LAN USB.” To get your Jinco wireless USB adapter working