Hi
I have a TP-Link TL-SG105E 'Smart' Switch (i.e. something between an unamanged and a fully managed Switch). No PoE so no high power demand.
Specs shows PS to be 5V 0.6A, so 3W, a spec which should be doable on USB Power.
I have tried it with a USB A to DC barrel connector (3.5mm x 1.35mm), plugged into a 5C 2.1A USB wall wart and it works fine, with my one test Ethernet cable.
My questions are these:
I have a TP-Link TL-SG105E 'Smart' Switch (i.e. something between an unamanged and a fully managed Switch). No PoE so no high power demand.
Specs shows PS to be 5V 0.6A, so 3W, a spec which should be doable on USB Power.
I have tried it with a USB A to DC barrel connector (3.5mm x 1.35mm), plugged into a 5C 2.1A USB wall wart and it works fine, with my one test Ethernet cable.
My questions are these:
- Will it still work when the thing is under full load i.e. does USB reliably provide the required power?
- What power actually gets used by such a device? I understand the data signals sent through the cable use negligible power, measured in milliwatts, so what uses the 3W?
- Ultimately, the test is in real-world usage, si I would like to if anyone else tried this and were there any issues with it seeming OK at first, but then saw glitches or failues or poor performance once it got loaded up with more cables and switching occurring?
