After installing Windows 10 on the first machine, Priya opened . Everything looked fine — except for one ominous yellow triangle next to “PCI Serial Port” under “Other devices.”
She tried the driver CD that came with the PCI card. It was designed for Windows XP. The installer crashed immediately. pci serial port driver windows 10
That was the clue. Priya opened the PC case and checked the motherboard. It was an Intel Q170 chipset — business-class, with vPro and AMT. The “PCI Serial Port” in Device Manager wasn’t the add-on serial card at all. It was a hidden internal serial-over-LAN interface used by IT administrators for remote management. After installing Windows 10 on the first machine,
She manually pointed Windows to the .inf file. Windows rejected it: “The driver is not intended for this platform.” The installer crashed immediately
Windows 10 saw this AMT serial controller but had no built-in driver for it. The actual PCI serial card she installed? It was working fine — just listed under “Ports (COM & LPT)” as something else.