The iConnectAUDIO4+ seems to run very hot, Is that normal?

The iConnectAUDIO4+ seems to run very hot - way hotter than the iConnectMIDI2+ and iConnectMIDI4+. Is that normal?

The highest temperature we have recorded in our testing is 41.1 ℃, which is several ℃ below allowed limits.
Note that this will feel quite warm to touch, but is within specifications