I have an external harddisk, like so: (output from usbdevs -v) Controller /dev/usb0: addr 0: super speed, self powered, config 1, xHCI Root Hub(0x0000), vendor 8086(0x8086), rev 1.00(0x0100) port 1 addr 9: super speed, power 224 mA, config 1, Elements 25A1(0x25a1), Western Digital(0x1058), rev 10.14(0x1014), serial xxxxxxxxxxxxxxxxxxxxxxxx I have some reason to believe it does nog get enough power from the port. Is the "power 224 mA" how the current is actually limited? Or can the device draw more without telling us? For comparison, there is another device like so, which is a SD card reader: Controller /dev/usb3: addr 1: high speed, self powered, config 1, EHCI root hub(0x0000), vendor 8086(0x8086), rev 1.00(0x0100) port 1 addr 2: high speed, self powered, config 1, Rate Matching Hub(0x0024), Intel(0x8087), rev 0.00(0x0000) ... port 6 addr 3: high speed, power 500 mA, config 1, USB Storage(0x0723), Generic(0x05e3), rev 94.51(0x9451) so at least some devices can draw that much. If the given 224 mA are actually enforced, can I give the disk more anyway? -Olaf. -- ___ Olaf 'Rhialto' Seibert -- "What good is a Ring of Power \X/ rhialto/at/falu.nl -- if you're unable...to Speak." - Agent Elrond
Attachment:
signature.asc
Description: PGP signature