| Feature | Description | |---------|-------------| | | 16550-compatible FIFO, baud up to 115200 | | PnP enumeration | Auto-detected via ACPI/PCI | | Power management | Supports D0–D3 device power states | | Serial I/O linking | Exposes COM port and allows kernel-mode IRP_MJ_READ/WRITE linking |
Finally, with the right in hand, the user right-clicked PNP0500 in the Device Manager and selected "Update driver." The link was restored. PNP0500 woke up from his low-power state, the yellow triangle vanished, and the serial port was open for business once again. pnp0500 driver link
The PNP0500 ID identifies a standard Communications Port (COM) | Feature | Description | |---------|-------------| | |