The E5372s is a (MiFi), not a USB modem stick, but it can also act as a USB modem (RNDIS mode) when connected via USB cable.
Use the Huawei Support Driver List to find general USB modem drivers. Manual Install: Plug in your device via USB. Open Device Manager on your PC. Look for "Other Devices" with a yellow warning sign. Driver Modem Huawei E5372s
Officially compatible with Windows XP SP3, Vista, 7, 8, 8.1, and Mac OS X 10.6 through 10.8 . Installation & Troubleshooting The E5372s is a (MiFi), not a USB
Which of these features would you like to explore further? Or do you have a different idea in mind? Open Device Manager on your PC
: If automatic installation fails, official tools like the HUAWEI PC Manager can be used to scan for and update required drivers. Key Specifications