I was wondering if my power supply could power this external hard drive thought the USB port while the Raspberry Pi is on
Any help would be appreciated
mahjongg wrote:the PI has a polyfuse rated at about 1.1A, for everything! As the PI itself can use about 400 to 500 mA (depending on what it is doing), and you want to be well below the tripping point of the polyfuse, this leaves only a few hundred milliamps for the USB port, not enough for something as power hungry as an USB hard-disk. Also most often the PSU used also cannot supply more than 700 to a 1000mA max.
Do you think this external hard drive work as it gets powered from a external source?tonyhughes wrote:Generally not. The RPi USB power capability is average at best, and often regarded as poor.
You need to power your hard drive from an external source.
Commonly done with a decent powered USB hub, to power the Pi, and peripherals like hard drives.