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  3. 1421619903

USB cable - dual head

Hello,
I am not quite sure about dual-head USB cable pinout.
This is what I understood so far:

Both power and data cables (with separate USB type A connectors at PC end) connect to one type B connector at DAC end. Later the power type A connector gets unplugged, after initial "handshake".

1. DATA cable - has 3 wires, Signal +, Signal -,
and power - (ground).

2. POWER cable - has 2 lines, power + (5 VDC)
and power - (ground).

Is this right? Or data cable carries ONLY Signal + and Signal -?

After the USB A connector with power is unplugged, I guess you must have ground also in data cable? Or not?

Any help would be very appreciated. Thanks :)
audiobb

Showing 1 response by audiobb

audiobb OP
103 posts
 
Hi, thanks for your answer.It seems that Audiogon members don't really know the answer to this.
I would like to build my own cable, that is why I ask.

How can the cable be limited to certain numbers in bits and kHz?
Except for certain data rate, like 480 MB/s.

I thought DAC can be limited, software also, and USB/SPDIF converters. But cable just carries the signal, I guess.

So, is this right?

""""
1. DATA cable - has 3 wires, Signal +, Signal -,
and power - (ground).

2. POWER cable - has 2 lines, power + (5 VDC)
and power - (ground).
"""
Thanks :)
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