More about driver dilemma dell optiplex 755 pci simple communications controller. Lister Junior Serial Numbers more. Drivers, enter Optiplex 755, and you should be at the driver downloads for. This worked on my Optiplex 755 W/ Windows 7 Ultimate. I will try it on my Opti 755 w/Windows Server 2003 next. How about the PCI Serial Port. Is there a workaround for Win7 and 2003? I just hat that yellow!BANG in my hardware list. PCI Serial Port, Drivers and Software Help, Drivers and Downloads. Get drivers and downloads for your Dell OptiPlex 755. Download and install the latest drivers, firmware and software.

Hello, I recently reinstalled the OS on a Dell Optiplex 755 and unfortunately, I don't have the drivers disc for this computer. I was able to install drivers for all of the hardware components except I could not find the drivers for the 'PCI Simple Communications Controller' Could someone help me locate this driver? I think this missing driver may be contributing to an issue with the PC's ability to connect to the internet at full strength. I am using an Encore Wireless Router in the upstairs portion of a home and the wireless signal reaches as far as the office downstairs but the the connection is very slow.