The 2.1 needs decent amount of power as it starts heating the oven inside. Chances are either you are not using the supplied USB cable (designed for higher current) or there is not enough power from the USB port. Try a powered hub.
thanks - i am using the supplied cable and drawing power from my Lenovo Think Pad T530 laptop.
Is it possible to provide power via the other 2 USBs on the other side and use the main Cube USB for data?
Otherwise i don’t really know how to make my PC supply more power to the cube. i will research USB hub option.
Ah, I have never managed to connect with a laptop. They generally can only supply 200ma which is not enough.
"Is it possible to provide power via the other 2 USBs on the other side and use the main Cube USB for data?"
No, one port it OTG for the Edison and the other is terminal for Edison.
Your best bet is to use an externally powered USB hub, the power cones from a separate plugin power supply.
Honestly, i just generally use power from a battery. This is fine as there is no power feedback to the USB.
This is only a pain when installing firmware, as you have to cycle the power to get into the boot-loader.
I would not load firmware via a hub but for config it is fine.
The hub you linked looks OK.
I’m a little concerned it did not boot from a phone charger, it should have done.!!!
Saying that if it is a branded ‘smart’ charger, it may not allow much current draw as they ‘talk’ to the phone to check if it is genuine or not before supplying full power.