"USB SER" drivers typically refer to communication drivers used to connect devices like microcontrollers, modems, or older industrial equipment to a modern computer .
Many inexpensive USB-to-Serial adapters use specific chips that require dedicated vendor drivers: CH341SER.EXE - Nanjing Qinheng Microelectronics Co., Ltd. usb ser drivers
The driver uses USB for data transfer and interrupt endpoints for line status changes. The standard descriptor includes: "USB SER" drivers typically refer to communication drivers