Discussion in 'OT Technology' started by nietsni3, Feb 27, 2005.
how many watts?
you get 1.2A off of it to start. After it links up with the host, they can negotiate up to 6A. This is based off of your 12V assumption, given a 100mA starting value (USB spec) and a max-draw of 500mA (USB spec).
i was thinking of modding my external enclosure (for 3.5" HDD) so taht it can draw power directly frm the USB port instead of an external power supply. how many watt does a 3.5" 7200rpm 200GB HDD usually needs? is it possuble to combine multiple USB ports together to rally a greater output power?
definitely a BAD idea. There are already enclosures that use 2 USB ports to run a notebook hdd... but that requires more than 1 port, and a low-power notebook HDD... Not a desktop drive.
Usually on a 7200rpm drive you're looking at 25-30 watts.