What I'd want to do is run a latency test once this was set up. Just for piece of mind. 
The test:
Take a kick drum track. or anything with clear transient spikes. solo it.  
Run it out the output of the interface and back to an input using a short patch cable. 
Arm a new track , turn off input echo, and re- record a section of the track. 
Zoom in on the transients and use the grid lines to see if it had fallen behind. 

The USB cable length limitation is not some arbitrary value, but is based on real-world physics that you can't get around.

Absolutely...
I've got a couple keyboards that connect via USB.
Go beyond 15' with the cable... and they sometimes don't work. (aka unreliable)
I've also seen this with the RME Babyface.  It's a great unit... but unreliable when connected with a long USB cable.

UPDATE:

So I received my extra long VGA and USB cables today from Amazon, and set everything up. WORKS BEAUTIFULLY!

My setup: interface -> powered USB hub -> 32 ft USB extension -> desktop. Absolutely zero latency, delay, dropouts, crackles, pops, nothing. Just a perfect recording booth.

For those who want to gives this a try, this is my USB extension cable, and this is my VGA cable. Please note that my Audio Interface is a light and portable Focusrite Scarlett 2i2, so this may not work for a more power-heavy interface. Good luck!

My parents have an expensive audio interface for listening purposes only. They had me snake one of those 32 foot cords (gosh it was long) around their bedroom to the stereo where the interface lives so they could lay in bed and listen to their 24 bit flacs while surfing the WWW. It has worked fine for them. I can tell you it works, but latency wouldn't matter much to them.

According to wikipedia, the maximum length for USB 2.0 is 5 meters, and that sounds about right. The reason for this is that the max timeout for a command reply is 1.5us, and the cable should be no more than 26ns total. You're looking at a max of 15 feet.

SuperG


According to wikipedia, the maximum length for USB 2.0 is 5 meters, and that sounds about right. The reason for this is that the max timeout for a command reply is 1.5us, and the cable should be no more than 26ns total. You're looking at a max of 15 feet.

All I know is it works. Quality is great, with my latency set to 2ms. I even did a test recording where I recorded to the beat of SONAR's metronome, and everything was perfectly on beat. Good in my book.

For remote setups like this I use Splashtop Streamer on my studio computer and the Splashtop app on my iPad. I can control everything that I need to in the quiet room. Simple, cheap, and totally cool!

vaultwit

SuperG


According to wikipedia, the maximum length for USB 2.0 is 5 meters, and that sounds about right. The reason for this is that the max timeout for a command reply is 1.5us, and the cable should be no more than 26ns total. You're looking at a max of 15 feet.

All I know is it works. Quality is great, with my latency set to 2ms. I even did a test recording where I recorded to the beat of SONAR's metronome, and everything was perfectly on beat. Good in my book.

It usually does - engineers always design beyond specification. The latency specified for USB has little to do with what is commonly tossed about here. There, latency refers to the processing delay caused by sample processing itself With USB (as in ethernet) it refers to the maximum time a client must wait before response - and the times are so short that the very length of the cable becomes a significant factor. Still, if you look at the numbers, cable delay is specified in nanoseconds. The delay you're using is all due to processing - the cable is simply insignificant.

  As per the description of the item: "- Devices with precise timing requirements (such as USB cameras) not recommended"...this USB cable is an active repeater, which is like a hub. It'll work, but might introduce timing errors in the recorded audio, jitter.....

Yeah, really. If it works it works. No need to speculate beyond that (although it is kind of fun and interesting). That's why I kept saying just try it. I've done TONS of things in my life music related and otherwise that you probably SHOULDN'T do but they ended up providing the end result I wanted. That really is all that matters. 

That said I'd be vigilant in keeping a close eye and ear on the waves for minute dropouts and the like just in case. It sucks thinking you've gotten something tracked perfectly then when trying to mix you hear an imperfection and have to shift gears and do it over again.

Cheers.