Power LED is dim or flickering; PC freezes when plugging in USB. Solution: This is usually a power supply issue. The VAS 5054A draws up to 500mA. Do not use a USB hub. Plug directly into the PC motherboard's rear USB port. If using a laptop, plug the laptop into AC power.
The is a diagnostic interface used primarily for Volkswagen Audi Group (VAG) vehicles. While the device is powerful, its driver installation—especially on modern Windows operating systems—is often problematic due to driver signature enforcement and outdated installer packages. Vas 5054a Usb Drivers