In addition to good performance, the noise level was also an important criterion for me. My in September 2012 delivered by Amazon TL-SG1024D (version / revision 2.2) is fan-free and noiseless. So you are finally transferred to a passive cooling solution and has waived the, as we read in the other reviews, but apparently very noisy fan. Since the unit is in operation is just lukewarm, the omission of a fan seems to have no negative consequences.
Since I distribute ungerne Vorschusslorbeeren and still can not make a statement on the long-term stability, gets the switch initially only four instead of the maximum five stars. An update my review then takes place after a period of "probation".
Conclusion: I would recommend the device to date a friend with a clear conscience and it would even buy at any time again.
Update on 31.10.2012: The switch behaves quietly and done without restrictions his service. Incompatibilities with the connected network devices I could not find continued. So therefore still all the best. A bit of time, I still give him, then he gets his fifth star.
Update on 06.12.2012: In addition all the best, so he has now earned its fifth star.