From: "John" <jbuckley1@mac.com>

Date: June 20, 2012 10:32:27 AM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: VT and USB 3

Hi Milton,

Thanks for the update.

Sonnett has a USB 3 card with very poor reviews and also only supports mass storage data transfer as you indicate for Caldigit. In addition, it fails to support any USB 1.0 or 2.0 devices.

USB 3.0 is new on the Mac. I'm hoping for more development / updating over time. 3.o support  would be a nice option to have going forward.

Best wishes,

John B.

--- In Astro_IIDC@yahoogroups.com, "milton_aupperle" <milton@...> wrote:

Hi Folks;

Just an update on USB 3 Camera support.

As it turns out, the Caldigit USB 3 Express card only supports Mass Storage class devices for USB 3 and 2.

It will cause a Kernel Panic is you try and use it for generic USB Bulk transfer requests for USB 2 cameras.

I specifically asked is Caldigit if they supported other USB 3 devices including USB 3 cameras for USB 3 access. They said yes back in October 2010. Their support now states no they don't support anything except Mass Storage devices like Hard drive and Card Readers, so I'm out $110 as their card is useless for my intended purposes. None of the other USB 3 cards work any better either.

So short of buying a new 2012 Mac Book to develop for USB 3, this is dead for USB 3 access.

Also, Apple has finally mentioned a few things about USB 3 support on the USB List. They are only supporting their own USB 3 hardware  on Lion or higher - so no Generic xHCI USB 3 support at all - especially over Thunderbolt.

They have no documentation for USB 3 other than saying there are a few new USB 3 specific API's. Until Apple is forth coming on more information, USB 3 support for cameras on the Mac is in Limbo.

TTYL..

Milton Aupperle

--- In Astro_IIDC@yahoogroups.com, "milton_aupperle" <milton@> wrote:

I have more testing to do with the Card, but I'll likely contact Point Grey Research early next week and see if I can get a USB 3 loaner camera sent out for testing.

So with any luck we Mac users will have access to USB 3 cameras going forward.

TTYL..

Milton Aupperle