Guys, stop speculating.
The reason is the following, Dell USB3 comes on the form of the NEC chip, connected to the motherboard usually by HM57 or above.
It seems that in the rush to be first, Dell got something wrong. Using the latest firmware from NEC and the latest drivers (I got them before they were released to the public), it still doesn’t work with audio streams.
The NEC chip is not at fault, it works with other machines (including in my gigabyte DAW).
The fault is not with the drivers, they are generic and work on ASUS, GIGABYTE etc.
The fault is in the way the USB3 signal is handled by the Dell motherboard, it DOES NOT pass audio (it sits in panic mode).
The standard for USB3 is that it is backwards compatible, but it seems this only applies to non realtime equipment, the Dells USB3 now works with most kit, (even my Denon SC-2000’s are working in the ports), but as soon as any audio device is connected it stops working.
So what’s the answer, short answer there’s no fix, it’s a hardware design flaw. Drivers, OS etc WILL NOT FIX IT !.
I have been working with Dell and NEC for over six months trying to resolve this.
I have direct contact with the Dell developers and the third line support at NEC/Renasas, USB3 & NI Audio will work on ASUS, MSI, Gigabye (and I think MacPro).
Latest drivers are the following
2.1.15.0 (notice it’s 2.1 and not 2.0 from Dell)
Latest public FW is 3028 (which fixes some HD disconnects)
the repository for these drivers is here
http://www.station-drivers.com/page/nec.htm
BTW the person suggesting XP and USB3, you need to brush up on comms. USB3 and XP don’t play well together, i won’t go into the full details, it’s far too long winded. We have tested on all platforms, including the forthcoming Windows 8 x64 which has native support for USB3 (no drivers required). Not one OS works with USB3 realtime Audio on the Dell XPS range …
Whats the answer… connect the audio device into the USB2/eSATA
…connect USB3 HD to USB3
…anything else connect to the other USB2 port (withhub if required), although be careful to what order you connect them, the USB2 internal design isn’t efficient it only has one TT, so if you connect a USB1 device, don’t expect good results from your USB2 devices.
Suggestion for multiple devices with different data rates is to buy a multi TT powered hub, and hang everything from there.
Hope this doesn’t sound like a condescending lecture, but i thought its about time things were put straight, speculation doesn’t help anyone (especially me).
The fault is exactly the same in the Gen2 XPS, but there may be hope for the 15z, it has a slightly different architecture.