What is a PCI Express Legacy COM Port Driver?
A PCI Express Legacy COM PortDevice Manager. These ports were traditionally used for communication with external devices, such as modems, serial mice, or some specialized hardware (e.g., industrial equipment or legacy software systems).
In modern systems, PCI Express (PCIe) slots are used for expansion cards that can include a variety of hardware like sound cards, network cards, or serial ports. A Legacy COM Port specifically refers to a serial communication port that operates in a way compatible with older serial protocols, typically found on motherboards or added via a PCIe card.
When you see a device labeled as a "PCI Express Legacy COM Port" in Device Manager in Windows, it means your system is trying to interact with a serial port provided by a PCIe card or a virtual port emulator, but the correct driver is either missing or not installed properly.
PCI Express Legacy COM Port drivers / INTEL_ DQ43AP
PCI\VEN_1415&DEV_C140&SUBSYS_C1401415
PCI\VEN_1415&DEV_C140&CC_070002
PCI\VEN_1415&DEV_C140&CC_0700
Compatible IDs:
PCI\VEN_1415&DEV_C140&REV_00
PCI\VEN_1415&DEV_C140 <---- Device ID matches with our database
PCI\VEN_1415&CC_070002
PCI\VEN_1415&CC_0700
PCI\VEN_1415
PCI\CC_070002&DT_1
PCI\CC_070002
PCI\CC_0700&DT_1
PCI\CC_0700
XP,VISTA,WIN7/64bits
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