Dell Optiplex 780 Pci Serial Port Driver – Verified Source

Sometimes, the automated installer fails on newer versions of Windows. If that happens, you can install the driver manually.

The OptiPlex 780 uses a proprietary AMT (Active Management Technology) PCI Simple Communications Controller. You do not need an actual "PCI serial port card" driver. dell optiplex 780 pci serial port driver

To confirm, right-click the device in Device Manager, go to Properties > Details , and select Hardware Ids . You will likely see PCI\VEN_8086&DEV_2E17 . 2. Official Download Sources Sometimes, the automated installer fails on newer versions

Before we fix it, it helps to know what it is. right-click the device in Device Manager

After the restart, the yellow exclamation mark should disappear.

Download the Windows 7 64-bit version of the Intel AMT driver from the Dell Support site .