: Modern versions of Windows (1709 and later) often find the correct driver automatically through Windows Update .
The OptiPlex 780 can support a PCI serial port, but only with specific chipset/card combinations and proper driver handling. For Windows 10 64‑bit, do not expect plug‑and‑play functionality from generic cards. Recommend switching to a quality FTDI‑based PCI card or external USB solution.
: If Windows cannot find the driver, right-click the "PCI Serial Port" in Device Manager, go to Properties > Details , and select Hardware IDs . The typical ID for this device starts with PCI\VEN_8086&DEV_2E17 . Manual Installation : Download the Windows 7 64-bit AMT driver from Dell.
: This is the primary driver required to resolve the "PCI Serial Port" yellow exclamation mark in Device Manager. It enables the Serial-over-LAN (SOL) and Local Management Service (LMS) features.
: Modern versions of Windows (1709 and later) often find the correct driver automatically through Windows Update .
The OptiPlex 780 can support a PCI serial port, but only with specific chipset/card combinations and proper driver handling. For Windows 10 64‑bit, do not expect plug‑and‑play functionality from generic cards. Recommend switching to a quality FTDI‑based PCI card or external USB solution.
: If Windows cannot find the driver, right-click the "PCI Serial Port" in Device Manager, go to Properties > Details , and select Hardware IDs . The typical ID for this device starts with PCI\VEN_8086&DEV_2E17 . Manual Installation : Download the Windows 7 64-bit AMT driver from Dell.
: This is the primary driver required to resolve the "PCI Serial Port" yellow exclamation mark in Device Manager. It enables the Serial-over-LAN (SOL) and Local Management Service (LMS) features.
