CHIP
Power Limitations
C.H.I.P. is limited to 900mA by default thus connecting an USB HUB or any other Periphal that requires more than that will make the device to abruptly turn off.
At the time of this writing, version 4.4 No-limit won't be enough. You'll have to make changes in the system to remove this limitation.
Please refer to: Abrupt Shutdowns for more information.