Leah Rowe
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---
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title: Dell OptiPlex 3050 Micro
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x-toc-enable: true
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...
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**[PLEASE READ THESE INSTRUCTIONS BEFORE INSTALLING](../../news/safety.md),
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OR YOU MIGHT BRICK YOUR MACHINE: [SAFETY PRECAUTIONS](../../news/safety.md)**
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<div class="specs">
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<center>
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<img tabindex=1 alt="Dell OptiPlex 3050 Micro" class="p" src="https://av.libreboot.org/3050micro/3050micro.jpg" /><span class="f"><img src="https://av.libreboot.org/3050micro/3050micro.jpg" /></span>
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</center>
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| ***Specifications*** | |
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|----------------------------|------------------------------------------------|
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| **Manufacturer** | Dell |
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| **Name** | OptiPlex 3050 Micro |
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| **Variants** | OptiPlex 3050 Micro |
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| **Released** | 2017 |
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| **Chipset** | Intel Kaby Lake |
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| **CPU** | Intel Kaby Lake |
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| **Graphics** | Intel HD graphics |
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| **Memory** | DDR4 SODIMMs (max 32GB, 2x16GB) |
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| **Architecture** | x86\_64 |
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| **Original boot firmware** | Dell UEFI firmware |
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| **Intel ME/AMD PSP** | Present. Can be disabled with me\_cleaner. |
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| **Flash chip** | SOIC-16 and/or SOIC-8 12MiB (96Mbit) |
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```
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W+: Works without blobs;
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N: Doesn't work;
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W*: Works with blobs;
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U: Untested;
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P+: Partially works;
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P*: Partially works with blobs
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?: UNKNOWN AT THIS TIME
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```
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| ***Features*** | |
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|---------------------------------------------------|----|
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| **Internal flashing with original boot firmware** | W+ |
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| **Display (if Intel GPU)** | W+ |
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| **Audio** | W+ |
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| **RAM Init** | W+ |
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| ***Payloads supported*** | |
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|----------------------------|-----------|
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| **GRUB (libgfxinit only)** | Works |
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| **SeaBIOS** | Broken |
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</div>
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Introduction
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============
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**Unavailable in Libreboot 20240612 or earlier. You must [compile from
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source](../build/), or use a version newer than Libreboot 20240612.**
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Official information about the computer can be found here:
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<https://www.dell.com/support/manuals/en-uk/optiplex-3050-micro/optiplex_3050-mff_om/processor-specifications?guid=guid-8ca53ab2-a85d-42d5-9106-5214220306aa&lang=en-us>
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Build ROM image from source
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---------------------------
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The build target, when building from source, is thus:
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./mk -b coreboot dell3050micro_fsp_16mb
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Mate Kukri's *deguard* utility disables the Intel Boot Guard on this
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machine. Libreboot uses this by default, along with `me_cleaner` to provide
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a neutered ME setup; unlike on other platforms, arbitrary code execution is also
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possible inside the ME on this mainboard, giving it much higher potential for
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software freedom in the future.
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Issues
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======
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Before flashing, you must know that this board is still a work-in-progress. It
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is using this patchset from the author, Mate Kukri:
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<https://review.coreboot.org/c/coreboot/+/82053> (libreboot uses patch set 14)
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Issues, as per Libreboot's testing, are as follows:
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* Although USB ports seem to work, the Gerrit page linked above says that the
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config is incorrect; need to investigate.
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* HDA Verb: Libreboot patches the board to support this, which fixes the
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headphone jack among other things.
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* VBT: Libreboot patches the board to support this, though it's largely
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optional on Linux/BSD.
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* ACPI-based shutdown seems to falter a lot; sometimes the board will not turn
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off after shut down, so you have hold the button down. Also, the button does
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not seem to signal the OS that a shutdown must occur.
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* PWM fan controls broken, so the system always run in a low-rpm state, even
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under stress conditions, which could lead to overheating under stress.
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To mitigate the PWM bug, simply cut the blue wire on the fan connector, and
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cut the red wire but jump the cut (on red) with a 100ohm resistor or so; cutting
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the blue one bypasses PWM, so the fan runs at full speed (very loud), and the
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red wire powers it, so the resistor on the red wire will slow the fan down, but
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leave it running fastr than on idle. You can also cap the CPU speed however you
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wish, via the `intel_pstate` driver.
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Note that HDMI audio *does* work, but you have to select it in your audio
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server e.g. pipework. The `pavucontrol` utility in Linux (with pipewire) lets
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you have a lot of control over audio I/O. Libreboot patches the board to add
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a verb, so headphones should work.
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Installation
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============
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Insert binary files
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-------------------
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If you're using a release ROM, please ensure that you've inserted extra firmware
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required refer to the [guide](../install/ivy_has_common.md) for that. (failure
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to adhere to this advice will result in a bricked machine)
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Libreboot's build system automatically downloads and processes these files if
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you build Libreboot from source, but the same logic that it uses must be re-run
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if you're using a release image.
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Set MAC address
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---------------
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This platform uses an Intel Flash Descriptor, and defines an Intel GbE NVM
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region. As such, release/build ROMs will contain the same MAC address. To
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change the MAC address, please read [nvmutil documentation](../install/nvmutil.md).
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Flash a ROM image (software)
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-----------------
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If you're already running Libreboot, and you don't have flash protection
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turned on, [internal flashing](../install/) is possible.
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<img tabindex=1 alt="Dell OptiPlex 3050 Micro service jumper" class="p" src="https://av.libreboot.org/3050micro/fdo.jpg" /><span class="f"><img src="https://av.libreboot.org/3050micro/fdo.jpg" /></span>
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If you have factory firmware (Dell), you can short the service jumper. It's
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near the RAM, under where the HDD goes (click the photos shown above).
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Just put a short on it when booting,
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and all flash protection is disabled; the factory firmware write might EFI
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variables to flash during shutdown sequence, so you should *pull the plug* to
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shut it down (remove the power by pulling the plug) after flashprog
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says `VERIFIED`.
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Flash a ROM image (hardware)
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-----------------
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For general information, please refer to [25xx NOR flash
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instructions](../install/spi.md) - that page refers to use of socketed flash.
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The side cover comes off easily, and you can find the flash ICs next to the RAM.
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Simply remove the screw at the back. The top panel then slides forward, and you
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can remove the SSD caddy; from then on, the flash is accossible.
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Observe the following photo of the flash (SOIC-8):
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<img tabindex=1 alt="Dell OptiPlex 3050 Micro flash IC" class="p" src="https://av.libreboot.org/3050micro/flash.jpg" /><span class="f"><img src="https://av.libreboot.org/3050micro/flash.jpg" /></span>
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You can otherwise flash internally, including from factory firmware(if the
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service jumper is set).
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@ -62,7 +62,7 @@ Introduction
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**Unavailable in Libreboot 20240612 or earlier. You must [compile from
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source](../build/), or use a version newer than Libreboot 20240612.**
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Official information about the laptop can be found here:
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Official information about the computer can be found here:
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<https://www.dell.com/support/manuals/en-uk/optiplex-7010-plus-small-ff/opti_7010_sff_plus_om/specifications-of-optiplex-small-form-factor-plus-7010?guid=guid-7c9f07ce-626e-44ca-be3a-a1fb036413f9&lang=en-us>
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Build ROM image from source
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@ -83,7 +83,8 @@ Desktops (AMD, Intel, x86)
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- Dell OptiPlex 7010 **MT** (known to work, using the T1650 ROM, but more
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research is needed) - 9010 also known to work. No GPIO changes, so it should
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be safe to flash.
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- [Dell OptiPlex 7010/9010 SFF](dell7010.md) **(for MT, please use the T1650 image)**
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- [Dell OptiPlex 3050 Micro](dell3050.md)
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- [Dell OptiPlex 7010/9010 SFF](dell7010.md) **(for MT, please use the T1650 image)**
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- [Dell Precision T1650](t1650.md) **(the same ROM works on 7010/9010 MT variant)**
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- [Gigabyte GA-G41M-ES2L motherboard](ga-g41m-es2l.md)
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- [HP Elite 8200 SFF/MT](hp8200sff.md) (HP 6200 Pro Business probably works too)
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@ -375,6 +376,13 @@ Intel D945GCLF (vendor BIOS)
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See: [Intel D945GCLF flashing guide](d945gclf.md)
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Dell OptiPlex 3050 Micro (vendor BIOS)
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---------------------
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Refer to the [3050 Micro page](dell3050.md). Internal flashing also possible.
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This has the Intel Boot Guard, but Libreboot uses the *deguard* utility to
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disable the Boot Guard on this Intel 7th gen board.
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Dell OptiPlex 7010/9010 SFF (vendor BIOS)
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---------------------
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