The power unit is quite large at: 9x5x3cm and when plugged in, overhangs the neighbouring power socket(s) by 6.5cm

Hope this helps!

Yes, it has a rather bulky power plug..

The power plug connects on the left side of the hub, there are no USB ports there at all, only the power connection. The 7 USB ports are on the front, no interference. There are two charging ports on the right side, fairly far apart, so easy to connect to as well. I can warmly recommend this device.