Many devices, such as the interrupt controller or the keyboard controller, have no standard EISA ID. Also, a set of compatible devices, such as video graphics array (VGA) and Super VGA (SVGA), are not actually devices but define a compatibility hardware subset. Yet another set of IDs needs to be used to identify buses.
Microsoft has reserved an EISA prefix (PNP) to identify various devices that do not have existing EISA IDs. Microsoft also uses PNP to define compatibility devices. The IDs are defined in the following tables.
Device ID Ranges
ID range
Category
PNP0xxx
System devices
PNP8xxx
Network adapters
PNPAxxx
Small computer system interface (SCSI), proprietary CD adapters
PNPBxxx
Sound, video capture, multimedia
PNPCxxx–Dxxx
Modems
The following obsolete device ID is provided only for compatibility with earlier device ID lists.
| Device ID | Description |
| PNP0802 | Microsoft Sound System-compatible device (obsolete; use PNPB0xx instead) |