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VGA2785 - USB 3.0 to HDMI Graphics Dongle

how many extended display thru usb2.0 port with HDMI resolution 1920 x 1080?
I am running windows 8.1 on a macbook pro late 2011 which has a thunderbolt port. Using a mini-displayport to displayport adapter to connect to the dph2000 splitter does not work at all. The LEDs on the back of the device are not lighting up at all. This is the second device as the first was sent back as faulty with similar problems, with the first device however the LEDs would light up when the device was held at an angle but would then fade. Is there a lack of support for my setup or is the new unit i received also faulty?
Hi, I can't get my DPU3000 to function at all on my Mac Book Pro ( early 2011 ).
I have a mini male-male DP connected from my Mac to the DPU but nothing happens and the system can't find any monitor connected to DP, HDMI or VGA-port on the DPU3000.
What can I do more to debug my problem? I can't find any drivers for the product either.

Best Regards, Torbjörn
While installing the driver on a Windows 7 system it does not recognize the driver version. I've tried with v. 7.0, 7.2 and 8.1 - one i just downloaded from your site.

Any advice on what it could be?
Following the instructions in the manual, the driver installs. In Device Manager under Storage Controllers, the entry "Generic Marvell 61xx RAID Controller appears. It is however marked as not functioning. Device Status: " This device cannot start (code 10)"
The specified request is not a valid request for the target device.
Kindly advise what corrective actions I should implement.
Regards,
Marius van Wyk