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  1. Support for OptiPlex 390 | Drivers & Downloads | Dell US

    Get drivers and downloads for your OptiPlex 390. Download and install the latest drivers, firmware and software for Windows devices.

  2. Dell OptiPlex 390 System BIOS | Driver Details | Dell US

    Aug 7, 2018 · For example: C:\ OptiPlex_390 _X.Y.Z.exe Where C is the drive letter of the USB device where the executable file is located and OptiPlex_390 _X.Y.Z.exe is the name of the downloaded …

  3. DSA-2025-390: Dell Secure Connect Gateway Security Update for …

    DSA-2025-390: Dell Secure Connect Gateway Security Update for Multiple Third-Party Component Vulnerabilities Summary: Dell Secure Connect Gateway contains remediation for multiple …

  4. Supported Operating Systems | Dell US

    Get the list of all the Supported Operating Systems for your Dell OptiPlex 390. See how this software supports your OptiPlex 390 computer’s basic functions.

  5. 390, maximum memory? | DELL Technologies

    May 1, 2013 · According to the spec sheets, the maximum memory you can install into an Optiplex 390 is 8 GB. Can anyone tell me why that is? I thought the chipset in this computer would support 2 x 8 …

  6. How to Use Dell Command Update to Update All Drivers, BIOS, and ...

    Oct 15, 2025 · Note: Dell Command Update is compatible with Latitude E-Series, OptiPlex Desktops 745 and newer, Precision Workstations 390 and newer, Precision Mobile M2400 and newer, and the …

  7. Optiplex model by year (HWcorner) | DELL Technologies

    Jan 24, 2024 · Hey redxps630! This is a really useful breakdown of Dell OptiPlex models by year — thanks for sharing! I’ve noticed that performance differences between Gen1 and Gen2 CPUs in these …

  8. 390, won't accept Bios from A11 To A14? | DELL Technologies

    Mar 16, 2019 · 390, won't accept Bios from A11 To A14? Gentlemen, I am trying to update the BIOS from A11 to A14 as I want to install Windows 7x64 under UEFI and in a related post, Dr. Yip said that …

  9. Optiplex 390 SFF, CPU upgrade to i7-2700k and i7-2600k not working

    Feb 16, 2024 · Optiplex 390 SFF, CPU upgrade to i7-2700k and i7-2600k not working Hello All, Optiplex 390 SFF, CPU has brought me unimaginable rage, and crushed my soul and spirit. (BIOS won't …

  10. Dell Precision 390 , Which CPUs work for an upgrade?

    Nov 14, 2011 · Dell Precision 390 , Which CPUs work for an upgrade? We have two Dell Precision 390. One with the Conroe E6300, and one with the Pentium 4 631, Cedar Mill variety. We would like to …