Pro-tip, if you're choosing products on the Omada website you can filter by "Special Hardware Design" -> "Fanless Design" and only see the fanless options.

This is one of the reasons I evaluated a lot of Omada products. Other brands it was painful to identify which models were fanless.

I've tested these ones:

• SG2428LP
• SG2210XMP-M2
• SG2008P

The all work well, though I would say the SG2210XMP-M2 runs quite hot. The case is almost too hot to touch in a 25C environment. Still works though and great for Wi-Fi 7 PoE APs.

One improvement I'd like to see for these products is exposing the internal / IC temperatures, so they can be monitored and reading fed into rack fan controllers and aircon. These IC all have temp probes already, TP-Link just needs to expose them to CLI / SNMP / Omada Controller.

  @whereisaaron Thank for you feedback. Actually we have plan to add temperature monitoring of chip. And for SG2210XMP-M2, we test it under 40°C ambient temperature with all PoE output, it meet the demand of UL62368, and I test it at 25°C ambient temperature and touch it, it seem about 30+ °C at metal shell. So for the  "The case is almost too hot to touch in a 25C environment", could you help to provide the installation picture, and do you test the temperature of the metal shell? Thank you very much!

Hi @Penry.huang! Thank you for your interest!

It's great news chip temperature monitoring in coming. I think it is especially important for fanless devices, since the device has no way to save itself. Even if the ambient temperature is correct, a device could be sandwiched with other devices in the rack and be heating too much. Without chip temperature monitoring, operators have no way to know there is a problem until the unit fails. So I am looking forward to that feature! Please expose temperatures on Open API (used by Home Assistant) and SNMP (Nagios / Checkmx / Zabbix etc.). If a device has multiple IC temps and SFP port temps, please just a expose all the temps. It is easy for the user to average/max them if they want one number. It would be great, though not essential, to have an option to display a temperature on each device on the dashboard map.

Regards the SG2210XMP-M2, I wasn't complaining. I am not surprised it is hotter than other fanless devices, it is a lot of 2.5Gbps ports with PoE in a very small case. You can certainly touch it, but after 3-4 seconds is uncomfortably hot to hold. I measured actual case temperatures at ~42°C, so the ICs could be pushing 90-100°C. I actually would have preferred something physically larger, like SG3210X-M2, but there is no SG3210X-M2 variant with PoE+. So the SG2210XMP-M2 with D226 rack mount kit was next best fanless option.

Thanks for the temperature testing information. You mention at 25°C ambient temperature the SG2210XMP-M2 shell should ~30°C. In my testing at 24°C ambient temperature and my test SG2210XMP-M2 shell ranges from 40-45°C (with a 23W PoE load). This is even with a 1U air gap above and below. The other fanless Omada units in same rack are merely "warm" at 30-35°C. If you say the SG2210XMP-M2 shell should be ~30°C then maybe there is a problem with this unit?

Hi  @whereisaaron, thank you very much for your detailed explanation.

I think you have a very professional and high performance network, 2.5G bandwidth and all Fanless, it is really cool (wish i also have one at home).

For the temperature difference between you lab and my test, I think it may because I place it at desktop, and no other heat source and obstacle for it to heat dissipation. But I think you also agree 40°C is normal, because it is 2.5G compact PoE switch, and it is much lower than UL standard. For the ICs, its datasheet show it can normal work at 130°C. 

And for 2.5G Rackmount Fanless PoE switch, we do evaluate it before. But you know 2.5G AP need more power than gigabit, so the total PoE budget will higher than gigabit PoE switch, and power consumption of 2.5G IC is much higher than gigabit IC, so the total heat of 2.5G PoE switch is higher than gigabit, making it very diffcult to do heat design. The possible way is use AC adapter.

We are developing a new version of SG3210XHP-M2 (8 port 2.5G rackmount PoE switch), it will lower noise by new power supply module and heat design, but sorry it is still have Fan.