Click to view our Accessibility Statement or contact us with accessibility-related questions
Oscaroscar
20
Sep 5, 2014
The PSU is a 12V supply, and there are 4 (or was it 5) switch mode supplies within the hub that power each group of hubs within this 13 port hub. This efficiently converts the 12v 5A to what would effectively be somewhere around 10-11 amps at 5V depending on its efficiency. This means you practically can get your full spec 900mA on all ports. The use of the charging port will push the PSU a bit harder if you are pulling 900 on all other ports though, but this is not likely in a normal application, as products rarely pull all 900mA constantly.
Because power is delivered to each group of 3 ports, you Could spread your power hungry devices across the board to share the load between the internal power supplies. This really isn't necessary though as all ports should be capably powered by the internal PSUs.
For speed though, put your highest priority devices at the USB input end of the device, as it is essentially 4 USB hubs in series. The first 3 ports are accessible, with the next hub daisy chaining off the 4th port. Therefore, all the data for ports 4-13 are all carried through the first hub. This is fairly normal for hubs as controllers have 4 ports. This is why most hubs are 4, 7, 10, or 13 ports.