Pnp0500 Driver Link

The Ultimate Guide to the PNP0500 Driver: Download Links, Fixes, and Installation

The hardware ID corresponds to the standard IBM 16550A-compatible UART Serial COM Port . It is a legacy communication interface integrated into many motherboard chipsets. When Windows shows a yellow exclamation mark next to "Communications Port" or an "Unknown Device" in Device Manager, it means the operating system cannot bind the proper driver to this hardware ID. pnp0500 driver link