as Administrator:
Legacy adapters sometimes fail in blue USB 3.0 ports. Plug the adapter into a black USB 2.0 port. jinco wireless usb adapter driver download windows 7 link
If the downloaded package includes a setup.exe or install.exe file: as Administrator: Legacy adapters sometimes fail in blue
Some Jinco adapters use or MT7612U . Use these generic packages: jinco wireless usb adapter driver download windows 7 link
Some Jinco adapters come with a mini-CD or a built-in flash drive that contains the driver. Insert the CD or plug the adapter into a different computer to see if a virtual CD-ROM drive appears with the installation files.