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ATLONA AT-DP400 Dual Link DVI to Mini DisplayPort Converter

4.0 out of 5 stars 85 customer reviews
| 4 answered questions

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  • AT-DP400 is HDCP Compliant, which means that you can play copy protected material through our converter
  • Supports Dual Link resolutions up to 2560x1600 or more common 2560x1440 used by iMac 27-inch or 27-inch LED
  • True pixel to pixel signal
  • Our converter is only hardware based, therefore will never have any issues with new operating systems or updates.
  • The DP400 does not change frame rate or refresh rate, and does not scale video, preventing any delays or video artifacts
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Technical Details

  • USB Powered

Product Description

The Atlona AT-DP400 is a DVI to Mini DisplayPort converter designed to convert signal from any Mac or PC computer with a dual link DVI output to a digital signal over a Mini DisplayPort connector. The AT-DP400 is specifically designed to work with iMac 27-inch and 27-inch LED which can support resolutions up to 2560x1600. Users can use the connected monitor as their main display or extend their desktop using it as an additional screen. The Atlona DVI to Mini-Display Port Converter is compatible with all Apple and PC Computers which have a DVI or Mini-DVI connections. The DP400 features an attached DVI cable and uses USB as power source, leaving no need for an external power supply.

Product Information

Product Dimensions 2.5 x 4.4 x 1 inches
Item Weight 6.4 ounces
Shipping Weight 6.4 ounces
Manufacturer Atlona
ASIN B003CWEXWO
Item model number AT-DP400
Customer Reviews
4.0 out of 5 stars 85 customer reviews

4.0 out of 5 stars
Best Sellers Rank #676 in Computers & Accessories > Computer Accessories > Computer Cable Adapters > DVI-HDMI Adapters
#19,526 in Industrial & Scientific > Industrial Electrical > Wiring & Connecting > Cables & Interconnects
#30,947 in Electronics > Accessories & Supplies > Cables
Date first available at Amazon.com March 18, 2010

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By Paul Pearce on June 16, 2010
Verified Purchase
I'm using one of these to display the DVI output from my PC on my 27" iMac at full 2560x1440 resolution. Here's what I've observed after using it for about 3 hours.

Positives:
1. No noticable display lag.
2. Perfect picture.
3. Plug and Play. No drivers required. The USB is just used for power.

Negatives:
1. The construction feels very cheap and lightweight.
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Before you buy the AT-DP400, make sure your source is capable of outputting the higher resolutions (specifically, 1920 x 1080 and 2560 x 1440). If your source is not capable of outputting at either of these two higher resolutions, you're wasting your money - buy the AT-DP200 instead (which has a maximum resolution of 1280 x 720 aka 720p). I received the AT-DP400 in Dec 2010. The actual converter box (and packaging) was professional looking. I didn't like that the circuitry inside the converter box seemed to be loose. When inserting the display cable (Mac mini-DisplayPort) cable into the box, the innards moved which was a bit unsettling - made the thing feel cheap. I also found that the display did not seem to work immediately, I had to plug and unplug the cable a couple of times to get it to work with the iMac display. However, once the display was working, there were no issues. Unfortunately, about a month and half after getting the AT-DP400, it mysteriously stopped working (just outside of the Amazon return period!). I managed to contact Atlona and got a return authorization number. They wouldn't pay the return shipping cost but have promised to send me a new one. I'll write an update to this review when (if?) I get the replacement. This conversion box was really promising to me (I used it to connect a work laptop to my home iMac 27") but so far the experience is disappointing. Oh well...
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I recently purchased a 27" apple cinema display to use with my new PC. This thing works perfectly. I spent way too much time trying to get a straight answer from the apple people, who ultimately told me I could try to buy a different product that has been discontinued and it wouldn't allow the display to utilize its maximum resolution or the speakers, web cam or built in microphone. I'm happy to tell you that this magic little box did the trick and I can use everything that this display is capable of doing. It's a little expensive but in my opinion totally worth it.
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I've been frustrated beyond belief with the trouble I've had trying to set up three different computers to share dual 30" monitors through a Mini DisplayPort KVM switch. This seems to push almost every single piece of equipment to its breaking point (though everything claims to support this), resulting in flickering displays, with the exception of this DVI-to-MDP adapter from Atlona. It just works, connecting my 2007 MacBook Pro's dual-link DVI output to the KVM without ever a hint of trouble on the 2560x1600 displays on an Apple Cinema 30" or Dell U3011 . The output signal is stronger and cleaner than the built-in DP output of either of the other two computers, which are current models from Apple and Dell. The construction of the AT-DP400 feels a bit clunky with its metal housing, but I love the fact that it hasn't given me a bit of trouble.
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Purchased the DP400 to use 27" Apple Cinema Display on my PC running Windows 7. Giving it a 4 because the wires are too short and has a few quirks. Would be nice if they listed these quirks on the website.

Plugged it in and worked excellent right out of the box at FULL Resolution. The sound and Isight Camera take some tweaking. (Isight camera tweaking is Windows fault). When I plugged the DP400 in my speakers were not balanced and the app to control audio BALANCE had no effect. Quick call to Tech support at Atlona, told me to pull USB and try different USB port. That worked great. The Isight camera works even though windows has the ! saying no driver installed. Go to Yahoo Messenger or Skype, try it out, you will see it works fine. IF you want to eliminate the annoying ! (No driver found): Go to Devices, Right Click on Display Audio (what Windows 7 named the camera), Properties, Hardware, Display Audio (yes Display Audio again), Change Settings, Driver, Update Driver, Browse My Computer, Let Me Pick from List. NOW choose Image, Generic, 1394 Desktop Camera. You are done ! is gone. Driver is useless but it does eliminate the annoying !.

Read a lot of reviews that stated they can't get full resolution. Verify: Graphics card supports DUAL DVI, and is capable of 2560-by-1440 resolution. Single link max resolution is 1920 x 1200. So if you are getting that resolution, that is the problem.

IMPORTANT:
PC OWNERS do not throw away that old monitor! With the Apple Cinema displays you will NOT be able to view your Bootup screen or be able to see the BIOS information. Apple Cinema only displays 3 resolutions, lowest being 720p (may be wrong on the exact number but know its not low enough for a PC).
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The adapter has worked perfectly from plug-in over a month ago, with nothing else to do. Without it, the Mac Pro (2008) could not connect to current Apple displays.
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