Ahh. Makes sense now. The first one I got, more than a year ago had a big fan and ran quite hot. All the ones since then I've gotten without a fan. I checked a recent one. Not D.

Looks like there may have been a short lived D version thats not as nice. Good eye.

Also disregard my power measurements since I did them on the first one. The consumption on more recent ones may well be lower.