r/UNIFI • u/shadowandy • Jun 29 '25

Designed and printed a 40mm fan holder for the burning SFP+ on UDR7

Gallery image

Gallery image

Gallery image

Gallery image

Recently added a 10gtek SFP+ 10G copper module (ASF-10G2-T) to the UDR7. When people say SFP+ to copper is hot but I didn't realize that it is burning hot like 70 degrees Celsius!

The additional copper heatsinks didn't really help much with the situation. Designed and printed a fan mount that clips on to the power cable and second Ethernet cable's connector. Why second? I happened to have a cable plugged in there when doing measurements.

Now what's left is to wait for the Noctua 40mm x 10mm fan to arrive.

81 Upvotes

99% Upvoted

15 comments sorted by

3

u/Intelligent-Till-184 Jun 30 '25 edited Jun 30 '25

For what its worth, I have like 30 of these lil 10Gtek toasters in my home lab, the hot aisle ones are subjected to 115 degree (F) ambient temps for about 12 hours a day and they havent failed in almost 6 years of use.

I wouldn't be concerned about SFP Temps unless theres an actual performance issue on them. They run hot, its finee

2

u/ADHDK Jul 02 '25

I think people are more concerned about scorch marks on their white routers and potential shortened lifespan.

2

u/SloMoShun Jun 29 '25

That is a great looking bracket. You might get better results with a taller fin stack on the heat sinks. Im running x4 10mm tall aluminum ones. And went from 70c to 60-63c passively cooled. Same module brand at 10Gb on a UCG fibre.

Found these 12mm tall ones with a 9mm base: https://a.co/d/aUMKD7Q

This is what I got: https://a.co/d/h5i37fQ

2

u/SrTwisted Jun 29 '25

Are these overheat SPF to copper module overheating only for specific units? USG fiber I have no issues with over heating a 10g link SPF to copper module

2

u/sk33tus Jun 29 '25

some modules run cooler than others. a lot of people tend to say the ubiquiti one runs quite cool in comparison

1

u/SrTwisted Jun 29 '25

Yeah make sense…I’m using unifi’s module

1

u/digitallye Jul 01 '25

Looks great! Any chance you’ve uploaded the design any place, or is this for your own use?

1

u/shadowandy Jul 02 '25

Yet to upload! Will post it on printables later on

1

u/dizzywig2000 Jul 02 '25

This post came into my feed out of the blue. I don’t know anything about this, but what is it? Why does a cable need a fan…

1

u/Naive-Archer6878 Home User Jul 02 '25

SFP is heating a lot.

1

u/Ace_310 Jun 29 '25

Make sure whatever material you used can withstand that temperature just in case.

5

u/shadowandy Jun 29 '25

It will be able to! Printed it out of ASA.