Windows blocks unsigned drivers by default. The official MediaTek VCOM drivers are often not WHQL-signed for modern Windows versions.

The string vcom-v1632 suggests:

Every MediaTek system-on-a-chip (SoC) contains an internal, read-only memory (ROM) boot code. This code is the very first thing that executes when power is applied. It has one job: locate and load the from the eMMC storage.

usb 1-1: new high-speed USB device number 6 using xhci_hcd usb 1-1: Product: MediaTek Preloader USB VCOM V1632 cdc_acm 1-1:1.0: ttyACM0: USB ACM device

Once the driver is correctly installed, it becomes the foundation for several professional tools:

When a MediaTek device is powered off and connected to a computer, it briefly initializes a