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Item#: N82E16812996113

VisionTek 900639 DisplayPort to Dual Link DVI-D Active Adapter Cable

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VisionTek Active DisplayPort™ to Dual Link DVI converter is a new generation DisplayPort™ to Active Dual Link DVI converter that receives both video and audio streams from an upstream DisplayPort Source link and converts to a Dual Link DVI output. The DisplayPort to DVI-D Dual-Link adapter lets you connect your DisplayPort video source (Macbook, Macbook Pro, Macbook Air, etc.) to any DVI-D display, eliminating the expense of having to upgrade to a DisplayPort-capable monitor. The DisplayPort adapter offers an active conversion and easy connectivity directly without any external power input and is able to handle full dual-link resolutions (up to 2560x1600). Use it to mirror your display to another monitor, or extend your desktop to increase your workspace.


Learn more about the VisionTek 900639

General

Brand
VisionTek
Model
900639
Type
DVI Converters

Connectors

Connector A
DisplayPort
Connector B
Dual Link DVI-D

Quick Info

Warranty

  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year


Customer Reviews of the VisionTek 900639

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  • Adam R.
  • 2/25/2014 10:31:27 PM
  • Tech Level: High
  • Ownership: less than 1 day

2 out of 5 eggsFailed with HP LP3065 2560x1600 dual link DVI display

Pros: Inexpensive, no external power needed

Cons: Could only do single link 1280x800 on my dual link 2560x1600 HP LP3065 display.

Other Thoughts: I bought this because a review at another site indicated that this dongle worked most of the time with a Hewlett-Packard LP3065 display, which is what I have. That HP display accepts only two video modes: 1280x800 single link DVI and 2560x1600 dual link. This adapter was only able to drive my display at 1280x800, although it did pass through the EDID video mode description for both 1280x800 and 2560x1600. When I tell my computer to set the video mode to 2560x1600 on the DisplayPort interface, my LP3065 just displays a black screen and turns the LED at the bottom of the screen yellow, which I think indicates that it thinks it is receiving an invalid video mode.

In case the video signal generation might be an issue, I'll mention that I connected this adapter to the DisplayPort output of my MSI b85m-g43 motherboard with an Intel i7-4770k processor. The computer was running
There is another review here from a person who claims to have gotten this dongle to drive an LP3065 with tolerably sporadic problems. So, what's different about my configuration?

Firstly, I'm embarassed to say I I did not buy from NewEgg. Perhaps NewEgg is selling a newer or at least better revision of the same product. I am, however, confident that this is not a case of the wrong part being shipped, because the dongle has "VisionTek, "Dual Link" and "Active" painted on one side of it, and has a small bar code label on the back marked "VT 900639".

Secondly, perhaps there is problem arising from the output driving the dongle. I am using the DIsplayPort on my MSI b85m-g43 motherboard, running Linux and X-windows with an open source Intel video driver ("xf86-video-intel") on a Linux-3.13.0 kernel. This computer was also driving a 39" Seiki from its HDMI port at 3840x2160 at 30 frames per second, although I had the same problems when the second monitor was only being driven at 1920x1080x30fps from before the dongle was plugged in through my testing the dongle at 1280x800 and 2560x1600. So, I don't think I was somehow out of video bandwidth.

1 out of 1 people found this review helpful. Did you? Yes No

  • Tim T.
  • 1/10/2014 12:18:54 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsDOA

Pros: Price

Cons: Do not know if works as it was DOA. Sent it back to VisionTek and a replacement is on the way.

Other Thoughts: Test before you ship, please!

Did you find this review helpful? Yes No

  • Paul W.
  • 12/14/2013 3:09:37 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

1 out of 5 eggsmisleading

Pros: none

Cons: Will not work at 2560x1600

Did you find this review helpful? Yes No

  • Nicholas F.
  • 11/20/2013 2:12:38 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggsWorks, but Fussy

Pros: Supports 2560x1600 monitors, inexpensive, portable, NO USB POWER REQUIRED! Also seems more reliable than USB-powered adapters.

I use it between a Lenovo dock (not USB 3.0 port extender) and an older HP LP3065 that is Dual-Link DVI only.

Note - you MUST have dual-link DVI cable to get this to work. No way to visually distinguish single-link & dual-link DVI cables. People get frustrated becamse some single-link DVI cables have all the dual-link DVI-D pins, but don't support dual-link DVI.

I grab a Sharpie and write "D-L" on the connectors with every Dual-Link DVI cable I buy. Saves a lot of heartbreak.

Cons: Had to futz around to make it work. Not sure which step made the difference:

- Used adequate power supply for the dock & laptop. Don't know if 90 watts is sufficient.

- Power-cycled the monitor - with the physical on-off switch - once the monitor was connected to the dock via this product with laptop running in the dock.

- Doesn't seem to work via laptop's Mini DisplayPort and Mini DP to DP adapter when laptop is undocked.

Did you find this review helpful? Yes No

  • Tyler D.
  • 9/25/2013 3:39:41 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsDoes not work correctly

Pros: Cheap, works for cases where single-link DVI is sufficient.(1680x1050@60Hz, 1920x1080@60Hz)

Cons: Does not work when dual-link DVI bandwidth is required. (1680x1050@120Hz, 1920x1080@120Hz, 2560x1440@60Hz)

The only output is a black screen.

Other Thoughts: This adapter appears to only provide single link bandwidth. 2560x1440@40Hz (161MHz pixel clock) works with some visual glitches.

For reference, single-link DVI is designed for a maximum of 165MHz pixel clock.

Avoid this adapter if you are looking to use resolutions above 1920x1080 or refresh rates above 60Hz.

2 out of 2 people found this review helpful. Did you? Yes No

  • Dwight E.
  • 9/10/2013 8:19:27 AM
  • Tech Level: Low
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsDoes the job!

Pros: Works to provide the DisplayPort to dual-link DVI connection to a dual-link, dual-view DVI KVM switch with a graphics card that would not support dual DVI output (for some reason). I recommend this adapter.

Cons: None.

Did you find this review helpful? Yes No

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Item#: N82E16812996113
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