Are USB-B to USB-B cables the same as USB-A to USB-B cables?

Hi Folks,

As the subject suggests, I have a device (a Novation Launchkey 25) that has a USB-B output and the provided cable has a USB-A at the other end.  That I can plug into my laptop and all is good.  

However, I also have a Behringer iStudio which has classic midi inputs (round, 5 pin serial) or USB-B, meaning I can't use the keyboard on my Ipad in this configuration (I would have to go via Camera Connector Kit which won't work with iStudio).

I can purchase a USB-B to USB-B cable but before I do I want to know if there are likely to be any problems.

Can anyone help with this?

Thanks,

Jes
JesSadOldGothAsked:
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Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
There are no problems in what you are trying to do.  USB-A are 4 pin cables and USB-B are 5 pin cables.  As long as you have purchased the correct cable, everything should be fine.
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viki2000Commented:
Let's see some pictures:
Novation_1Novation_2Novation_3iStudio_1iStudio_2Which one is yours and how do you want to connect them? What with what?

Page 14 here:
http://us.novationmusic.com/sites/default/files/novation/downloads/4646/launchkey-user-guide.pdf
or page 12 here:
http://global.novationmusic.com/sites/default/files/novation/downloads/10577/launchkey-mk2-ug-en_0.pdf
shows in user manual how to connect your Novation Launchkey keyboard to iPad.
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JesSadOldGothAuthor Commented:
Hi Viki,

Thanks for going to the effort to display all the pictures and to go through the manual for the Launchkey.  I thought I'd put enough information in.

I'm using the Novation_1 above and both iStudio models appear to be equivalent.  The recommended connection from Novation is USB-B female, as pictured, to Apple Camera Connection Kit - I want to bypass that and go into the iStudio instead.

I've had a response from Novation who've said that USB-B to USB-B or Midi is not supported, and to only use their supplied cable, but to perhaps use a powered USB Hub with USB-B as an output.

Thank goodness everything has standardised, eh?

Later,

Jes
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JesSadOldGothAuthor Commented:
Thanks both for spending the time responding.
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viki2000Commented:
iStudio is not the same. One is "iStudio" and the other one "iStduio iS202". The connectors on the back side seem the same, but maybe the software/firmware is different.

The  keyboard connection to Laptop or iPad is clear from the user manual found above.
I tried to understand the connections of the iStudio to Laptop and iPad.
I found only the next small user guides:
http://starin.info/Product%20Info/Backup%20-%20Behringer/iSTUDIO.pdf
https://media.music-group.com/media/PLM/data/docs/P0AJQ/iS202_QSG_WW.pdf

I think is a question of drivers when is connected either to PC or IPad.
Are you sure is just a plug and play device? I don't think so.
Almost any device based on USB requires drivers.
Then how to you expect to work from one to another?
It is not only a question of providing 5V to USB from an active USB hub, but is also a question of providing the proper communication through the USB which requires drivers. And one device cannot provide for the other one.
It is no harm to try it, but I think it will not work.
Just check the definition USB MIDI, marked 16, on the next file:
https://media.music-group.com/media/PLM/data/docs/P0AJQ/iS202_QSG_WW.pdf
And USB from keyboard seems that does not output MIDI, it requires a USB driver and a software in PC or iPad.

I think the solution is only using the PC or iPad and connect both musical instruments and reroute the signals/data from one to another through PC.
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