There are many USB Wirless devices that have the RTL8812bu chipset, so the device may not look like the illustration. Also as many of these devices come with the driver on a mini cdrom and people don't have cdrom drives on their computer or laptop these days, you'll need to get it from the internet.
Windows generic drivers for the Realtek 8812bu provided by Microsoft may cause stability issues or intermittently cause it to malfunction and causing instability in Windows. So, installing the drivers from Realtek are important if you are experiencing any issues like these.
