What happens when devices request different voltages from a USB hub?
65365
How does USB Power Delivery work with voltages above 5V without damaging 5V peripherals?
48848
Relay: higher voltage allowed at lower current?
48571
KERNELS path for USB device connected to HUB
7362
Laptop power supplies, does current matter?
66787
Can USB 2.0 power a USB 3.0 external HDD?
100157
Running 2 5V USB battery power packs, Can I use them in parallel
80778
How much power can be drawn from the lightning connector by a external device?
65912
Are any of the USB ports on a Macbook Pro "always on"
70251
Can I charge a computer through its USB port?
95194
why does plugging into a new USB port often solve USB problems?
65210
Capacitor on USB cable?
68228
18V from printer USB port. Is that normal?
157632
How to identify multiple USB-serial adapters under Ubuntu 10.1
121794
Is it possible to use a laptop charger in other laptop with different specifications?
68589
Why are USB cables of two different OEM's different
10700
How to get more than 100mA from a USB port
156300
USB data transfer with a separate power source