Downloading a 225 MB driver on a Windows 7 machine at these speeds can occur due to several factors: Legacy Hardware Limitations

"The publisher could not be verified. Are you sure you want to run this software?"

: Older network adapters or USB 2.0 Wi-Fi dongles operating under suboptimal conditions.

If you have any further questions or need assistance, please leave a comment below. Make sure to include your Windows 7 version (32-bit or 64-bit) and the device model.