Neo Sound and USB Questions

danimanns at danimanns at
Fri Aug 17 19:19:29 CEST 2007

Tilman Baumann wrote:
> danimanns at wrote:
>> Are there plans to provide a car adapter for the Neo?
> This is a general problem. Where are USB-Power Adator out there. Also 
> for cars.
> But most of them just power the 5V line. This is bad with 99% of the 
> bad behaving usb gadgets out there.
> But Neo is prolite and asks the host if it could draw it's 500mA and 
> if not only takes 100mA out of the bus.
> This is how the usb specs tell you to do it.
> But most devices (like usb microovens and the like) just draw power as 
> there would be no tomorrow and don't care how much the host can 
> privice. If your usb-powersupply burns out - bummer. :)
Don't know if I understood right. Do you mean,
the Neo asks the power supply how much power it's able to provide?
Why should the Neo do this? Like I described below I guess
the Neo uses the 5V channel only for charging, and so
the 500mA are always okay. Why not use a normal 500mA
power supply then?

Don't take me wrong, I don't understand too much of this stuff ;)
> A button that puts your Neo in the same "i don't care about specs or 
> your usb interface asshole" mode other deivces use and just draws it's 
> power. (No idea if that would even work. But i think it might)
Does this mean, if we push this button, it's not possible
anymore to use a second USB device at the same time?

I guess that doesn't change anything because if I understood right,
the 5V channel is used only for charging the Neo, (No power output
for attached devices) what is the reason for why we need those
external powered USB hub.

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