Fan on Ulis Notes https://wolf-u.li/en/tag/fan/ Recent content in Fan on Ulis Notes Hugo -- 0.155.3 en Copyright 2006-CURRENTYEAR Uli Wolf - All rights reserved Wed, 27 Aug 2025 23:29:56 +2700 Alliwava U58 with Ryzen 7 5825U: Reduction of the fan noise https://wolf-u.li/alliwava-u58-ryzen-7-5825u-fan-noise/ Wed, 27 Aug 2025 23:29:56 +2700 https://wolf-u.li/alliwava-u58-ryzen-7-5825u-fan-noise/ <p>When i recently received a bunch of <link rel=dns-prefetch href=//www.alliwava.de /> <a href="https://www.alliwava.de/en/products/u58" title="Alliwava U58" target="_blank" rel="nofollow noopener noreferrer" > Alliwava U58&nbsp;<svg xmlns="http://www.w3.org/2000/svg" class="icon" aria-hidden="true" focusable="false" viewBox="0 -128 512 640"> <path d="M384 320c-17.67 0-32 14.33-32 32v96H64V160h96c17.67 0 32-14.32 32-32s-14.33-32-32-32L64 96c-35.35 0-64 28.65-64 64V448c0 35.34 28.65 64 64 64h288c35.35 0 64-28.66 64-64v-96C416 334.3 401.7 320 384 320zM488 0H352c-12.94 0-24.62 7.797-29.56 19.75c-4.969 11.97-2.219 25.72 6.938 34.88L370.8 96L169.4 297.4c-12.5 12.5-12.5 32.75 0 45.25C175.6 348.9 183.8 352 192 352s16.38-3.125 22.62-9.375L416 141.3l41.38 41.38c9.156 9.141 22.88 11.84 34.88 6.938C504.2 184.6 512 172.9 512 160V24C512 10.74 501.3 0 488 0z"/> </svg></a> based on the Ryzen 7 5825U i thought i have issues with my hearing at first. They were crazy noisy, especially the fan was awful. After researching a bit, i found a nice solution <ins class="adsbygoogle" style="display:block; text-align:center;" data-ad-layout="in-article" data-ad-format="fluid" data-ad-client="ca-pub-2322978122735420" data-ad-slot="3161252284"></ins> In the <link rel=dns-prefetch href=//forum.alliwava.com /> <a href="https://forum.alliwava.com/threads/about-the-fan-adjustment-of-the-u58-mini-pc.80/" title="Forum of Alliwava" target="_blank" rel="nofollow noopener noreferrer" > Forum of Alliwava&nbsp;<svg xmlns="http://www.w3.org/2000/svg" class="icon" aria-hidden="true" focusable="false" viewBox="0 -128 512 640"> <path d="M384 320c-17.67 0-32 14.33-32 32v96H64V160h96c17.67 0 32-14.32 32-32s-14.33-32-32-32L64 96c-35.35 0-64 28.65-64 64V448c0 35.34 28.65 64 64 64h288c35.35 0 64-28.66 64-64v-96C416 334.3 401.7 320 384 320zM488 0H352c-12.94 0-24.62 7.797-29.56 19.75c-4.969 11.97-2.219 25.72 6.938 34.88L370.8 96L169.4 297.4c-12.5 12.5-12.5 32.75 0 45.25C175.6 348.9 183.8 352 192 352s16.38-3.125 22.62-9.375L416 141.3l41.38 41.38c9.156 9.141 22.88 11.84 34.88 6.938C504.2 184.6 512 172.9 512 160V24C512 10.74 501.3 0 488 0z"/> </svg></a>, a BIOS Update is offered which resolves the issue. After downloading the file C4909086_ShellAuto, the Fan is already a lot more bearable than before (almost no noise under idle). However you can then even adjust the maximum power limit of the CPU to even limit the noise also under load (BIOS -&gt; Advanced -&gt; Power Limit Select).</p> When i recently received a bunch of Alliwava U58  based on the Ryzen 7 5825U i thought i have issues with my hearing at first. They were crazy noisy, especially the fan was awful. After researching a bit, i found a nice solution In the Forum of Alliwava , a BIOS Update is offered which resolves the issue. After downloading the file C4909086_ShellAuto, the Fan is already a lot more bearable than before (almost no noise under idle). However you can then even adjust the maximum power limit of the CPU to even limit the noise also under load (BIOS -> Advanced -> Power Limit Select).

As the download of the files proved to be quite complicated (they use a quite strange downloader), I’ll present the approach here as well.

  1. Format the USB flash drive, select FAT32 for the USB flash drive file system, and change the volume label to WINPE. It is important to use FAT32, ensure that you don’t use NTFS or exfat.
  2. Copy the unzipped file to the prepared USB flash drive
  3. Plug the USB flash drive into the Alliwava U58 along with a keyboard to operate at the same time
  4. Press F11 when you boot up, select the USB Drive and press the Enter button to wait for the bios update to finish
  5. After the update, the U58 turned off in my case. If it doesn’t, then press the power button to turn off, and wait for about 2 minutes to turn on the machine

Generally: Be patient with BIOS upgrades

]]> BIGTREETECH Manta E3EZ Fan voltage https://wolf-u.li/bigtreetech-manta-e3ez-fan-voltage/ Thu, 13 Jul 2023 22:55:43 +1300 https://wolf-u.li/bigtreetech-manta-e3ez-fan-voltage/ <p>If you ask yourself which voltage the fan connectors of the <a href="https://shareasale.com/r.cfm?b=1890927&u=3683758&m=131011&urllink=https%3a%2f%2fbiqu.equipment%2fcollections%2fcontrol-board%2fproducts%2fbigtreetech-manta-e3ez-v1-0-for-ender3-ender3pro-ender5%3fvariant%3d40286567727202&afftrack=">BIGTREETECH E3EZ*</a> board have, you are not alone. <ins class="adsbygoogle" style="display:block; text-align:center;" data-ad-layout="in-article" data-ad-format="fluid" data-ad-client="ca-pub-2322978122735420" data-ad-slot="3161252284"></ins> The User Manual of the BIGTREETECH E3EZ Board just features a &ldquo;Mainboard Supply Voltage&rdquo; description but not special &ldquo;Fan Voltage&rdquo;. And this is on purpose - basically the fan features the same voltage as DC_IN. So if your Mainboard is connected to 12V, the fans also should be 12V fans. And likewise with 24V (which is a bit more common).</p> If you ask yourself which voltage the fan connectors of the BIGTREETECH E3EZ* board have, you are not alone. The User Manual of the BIGTREETECH E3EZ Board just features a “Mainboard Supply Voltage” description but not special “Fan Voltage”. And this is on purpose - basically the fan features the same voltage as DC_IN. So if your Mainboard is connected to 12V, the fans also should be 12V fans. And likewise with 24V (which is a bit more common).

References

]]> Victron MultiPlus 2 48V Fan plug type https://wolf-u.li/victron-multiplus-2-48v-fan-plug-type/ Tue, 30 May 2023 09:05:13 +3000 https://wolf-u.li/victron-multiplus-2-48v-fan-plug-type/ <p>In the endeavor to silence an Victron MultiPlus-II 48/5000/70-50, i replaced the internal fan with a much more silent fan - the Noctua NF-F12 iPPC-24V-3000. <ins class="adsbygoogle" style="display:block; text-align:center;" data-ad-layout="in-article" data-ad-format="fluid" data-ad-client="ca-pub-2322978122735420" data-ad-slot="3161252284"></ins> For this purpose i needed remove the original fan. Unfortunately Victron decided to use a non-standard fan plug (which makes sense since the MP2 is also used in environments where the plug might be rattled out) which left me with two options:</p> In the endeavor to silence an Victron MultiPlus-II 48/5000/70-50, i replaced the internal fan with a much more silent fan - the Noctua NF-F12 iPPC-24V-3000. For this purpose i needed remove the original fan. Unfortunately Victron decided to use a non-standard fan plug (which makes sense since the MP2 is also used in environments where the plug might be rattled out) which left me with two options:

  • Cut the original fan and resolder the plug to the new fan –> Potential warranty loss
  • Find the plug type for the fan

After a while of researching i found out that it is a H2P-SHF-AA. Sources for these are digikey , rs-online  or Aliexpress* .

Just a hint: You can unplug the pins from the original fan plug of the Noctua and push these into the pin bays of the H2P-SHF-AA - no need for any soldering.

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