I use actual 23 Antminers on 4 Dlink DUB-H7 - 3 are full and one just with 2 miners at the moment.
The HUBs are powered by a 350W PC-Supply and Ants are running without mod on 0A81 stable.
Cooling from downside from power-supply and from front with 120mm Fan running on 5V silent.
At all actual power consum 72W ! I have an asic-cube also taking arround 300W for less GH.




I'm noticing that even if I use a 300w PSU with 23A on +5, if I use the power connector of the DUB-H7 I can power at maximum 5 U1... was it the same for you? you use the direct wires for this reason or you didn't try with the "normal" connector?