If Windows 7 shows your device as "CDC Serial" or an "Unknown Device" in Device Manager, follow these steps to install it manually: Atmel USB CDC Virtual COM Driver - Microchip Technology
Use the STMicroelectronics Virtual COM Port Driver (Package STSW-STM32102). cdc virtual com driver windows 7 download
Many MediaTek-based devices use a standard Android CDC Driver for flashing and debugging. How to Install the CDC Driver on Windows 7 If Windows 7 shows your device as "CDC
Visit the Zebra Support Page and search for the "USB CDC Driver" specific to your scanner model. cdc virtual com driver windows 7 download
Download the Atmel USB CDC Virtual COM Driver for AVR and SAM devices. Barcode Scanners: