I think you can't rely on that and you shouldn't. every manufacturer has its own way. what you can rely on is usb protocol standard and hardware specifications required by usb protocol.in that way even if one motherboard couldn't supply the maximum current, it is not your product fault. you can tell your customer "our products comply with all standards, it is your computer that is non-standard" :wink:nicleo said:As USB interface carries power (VBUS, 500mA), is there any short-circuit protection (circuit) on motherboard?
Wowww... 5 amps (x10 times of 500mA), that's a lot. No wonder the Intel ICH5 chipset on my m/board burnt.House_Cat said:If the motherboard complies with USB specifications, it is supposed to limit current to 5amps maximum for overload. The limit may be designed into the power supply, or be a fuse, a circuit, a resetable device, etc. on the board.