can i charge something via usb when computer is off?
65912
Are any of the USB ports on a Macbook Pro "always on"
119440
Is it possible to power off a PCIe video card/slot? (eg. hot-plug)
72609
Testing a UPS by unplugging it from the wall
13968
How to disable auto power off of usb devices like usb mouse?
14812
Autorun a script after I plugged or unplugged a USB device
23815
switch between battery and usb power no microcontroller circuit
135012
How to disable a USB port in Windows (XP) and make it available only for charging?
31468
How can I force an internal hard drive to power on or off when I want?
15093
Is it better to use a laptop on battery or on AC power?
21394
Laptop battery charge management
40907
Is it possible to turn off a specific USB port so it doesn't accept any device?
24473
How to disable battery charging?
42628
Automatically power on Android when the charger is connected
9061
How do I get Windows to re-attach a USB device without having to plug it in again?
99386
Reduce power use on computer
41768
How to reconnect a logically disconnected USB device?
23911
Notebook computer battery says: plugged in but not charging with no further information. Is the battery bad already?