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Author Topic: Power from USB connector  (Read 2505 times)

LordZuul01

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Power from USB connector
« on: August 09, 2003, 09:09:44 PM »

Everyone has probably sucked power from this one, but I mention it anyway.

USB connector is designed to feed power up to 100 mA +5V power to the devices connected to it. The power is fed though Vbus and GND pins. The host USB pert can supply up to 500 mA at voltage at least 4.75 V (for the HUB to be able to power 4 port HUB which can supply up 100 mA at voltage of at least 4.40V). The USB port does not need to supply more than 100 mA unless the device connected to it requests more current. This is actually part of the USB protocol, and is done usually through the device's firmware. The Intel documentation states that overcurrent-prevention requirement says that no USB port ever pass more than 5A onto any port (short circuit protection to avoid damage to equipments and wiring).

So watch how you mod those USB hubs and USB devices.

:: LZ ::
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mozingod

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Power from USB connector
« Reply #1 on: August 14, 2003, 01:28:25 PM »

OMG! Stop copying off of other sites and pasting here.

http://www.hut.fi/Misc/Electronics/circuits/power_from_pc.html

Your last three threads about getting power from PS/2 port, keyboard port, and this are all copied word for word from this page. I didn't nottice it in that XP defrag post before, but this is getting annoying. At least rephrase it in your own words or something...
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komp_killa

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Power from USB connector
« Reply #2 on: August 14, 2003, 01:35:07 PM »

or post the credit of who originally said it
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nemattoad

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Power from USB connector
« Reply #3 on: August 14, 2003, 01:41:58 PM »

maybe for REGULAR USB port.

I have 2 USB ports which are "high powered"

My own little mod :D
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minnick007

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Power from USB connector
« Reply #4 on: August 14, 2003, 01:49:50 PM »

I personally am getting sick of this guy spamming the threads with stuff he finds online, especially when he doesn't give the owner their credit. Viridious (sp) has called him out several times.  Geez, if you google like the first 6 words of his posts it brings you right to where he got them from.  


LordZuul01, If you want us to get this information, fine, post a thread with all of your little links in it instead of copy and pasting them in several new threads. This is just blatent spamming.
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