@Paul Chiu We applied a fix for uncertified devices and that's the unit sold today. If your devices are Thunderbolt-certified, there was never an issue. The units can get quite warm but operate normally in a normal, open air room.
@Paul ChiuThis list is a good place to start but it doesn't list everything. However, it's my understanding that all Apple products are TB certified, but I will verify. If you do get the KVM I can check the SN for you. Everything we sell should be revised as a precaution.
i just received the switch from amazon and its serial number starts with 4782, similar to @Andre Kay's. so, i received an old version? kind of a bummer...
@bogner.f The originals started at 4778608300001, ones higher than 47786080301794 have the native fix but some below this were handfixed. 4782x should be newer.