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17 of 17 people found the following review helpful
on June 13, 2013
Like many of the other reviews, I had two main complaints with this product:

1) Problems waking from sleep, and
2) That the adapter consumes one of the precious USB connections in addition to the mini display port.

Note that the Apple-branded adapter has many reviews with the same complaints, so I think this is more of a design issue rather than a quality issue. Although some say the newest Apple version with firmware 1.0.3 is better.

I think I have come up with a work around that addresses both of these issues. The USB connector on the adapter appears to be for supplying power only. It also explains why the adapter freaks out when the computer wakes up: it is trying to both establish the video connection while at the same time, power is just becoming available through the USB connection.

I simply connected the USB cable from the adapter to a spare Apple iPhone USB power supply. Now the adapter has continuous power and seems to wake from sleep without issue. Doing this also freed up the USB port on my MacBook Pro previously used by the adapter.

I just did this today, but so far, so good. I'll update this review if things change.
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4 of 4 people found the following review helpful
on November 7, 2013
I ignored all of the other reviews and bought this product to use in tandem with my 2012 Macbook Pro and 27" Monoprice high resolution monitor. When it works, it works well. However, it rarely works. It'll fail without any provocation either showing snow, flashing the display, or resetting the resolution to 640x480, which also resizes all of my windows. The only fix is to repeatedly unplug it from the laptop and plug it back in until it starts working as expected. It usually fails 4-5 times per 8 hour day. Thinking I had a defective unit, I returned it for a replacement. Unfortunately, the replacement does the same exact thing.

If anyone has an alternative product that might work, please let me know. Thank you.
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2 of 2 people found the following review helpful
on August 29, 2012
This thing has all the same problems the apple one has. You have to mess around by plugging/unplugging it when the picture goes fuzzy. This is occasional, but at this price point, it's a joke to have to do this. I recommend getting a used one from somewhere else, as the "new" ones aren't worth it.

update:

wanted to add , still having issues , basically upon power on and any wake from sleep, you get fuzzy. also, I am running firmware 2.0

tip:
1. overheating can occur, so as other reviewer said, unplug when you can
2. try putting your monitor in standby mode, if you step away
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2 of 2 people found the following review helpful
Mine lasted almost 2 years before it crapped out. Yes it does overheat and yes it had times where it worked intermittently, but overall it did the job.
Just make sure you unplug it after every use to minimize the heating.
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1 of 1 people found the following review helpful
on February 18, 2013
Works most of the time just fine after all the Mac mini (2012) firmware updates and under 10.8.3 (beta).
I have no complaints for the picture quality or lag time paired with NEC 3090WQXI @2560 x 1600 resulution.
However, it won't wake up the display sometimes, need to unplug it from either usb (power) or DP, but this happens very rarely, once a week or so while the mac is in heavy daily use, and it's unclear, if this is by some apple firmware / USB 3.0 drivers (sleep/wake) bugs... I tend to consider this Apple bugs since with 10.8.3 (beta) updates it was working more and more stable (fewer issues with each beta update).
It is also well made of quality materials (aluminum case) and not as hot as Apple genuine.
I haven't tested it at 2560 x 1440 or smaller resolutions, though.
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1 of 1 people found the following review helpful
on November 2, 2013
It has worked great for the past year on my Mac Mini with 10.7.x and 10.8.x, but with 10.9.x it completely locks up my system. I was only able to complete the Mavericks installation after disconnecting this item. My system will lock up in 10.9.x whether I try to boot up with it attached or if I try to attach it after it has already been booted and is running fine with the primary monitor. This was being used to drive a 2560x1440 secondary monitor and I really need my dual screens, so I may have to downgrade back to 10.8.x until a fix is available.
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on September 25, 2014
When it works, it does exactly what it's supposed to and drives my 27" 2560x1440 monitor.

However, it fails in several ways:
* It takes too long to power up - sometimes up to 10 seconds. This is long enough for the computer to recognize the display as disconnected. The only workaround is to disconnect and reconnect.
* Sometimes it doesn't report the correct resolution to the computer, causing it to register as a 640x480 display. The only workaround is to disconnect and reconnect.
* Sometimes it connects to the computer but only sends white noise (or nothing at all) to the monitor. The only workaround is to disconnect and reconnect.

The above issues would be tolerable if I only had to deal with them the initial moment when I connect it to my computer. However:
* It doesn't connect snugly to my MacBook Pro, and disconnects at random but frequent intervals (at least once per day).

As a result, at least once per day I have to disconnect and reconnect the adapter, forcing me to reposition all of my windows (which, depending on how many workspaces I have open and other monitors I have connected, can be *a lot*).
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on October 28, 2013
When I first got it, it worked. Im using it on an Apple 30" Cinema Display--the one where you need the dual DVI link because it's a massive monitor.

It worked for 5 months and then started showing the fuzzy / static noise everyone else is reporting.

Im well outside of the 30-day return policy here at Amazon, so based off another reviewer of this product, I contacted Monoprice directly (live chat) and after a few transfers, they were able to set me up with a RMA# to return the faulty unit back to and replace it with a new one. Not too confident with the new one--the same thing will likely happen, based on all the similar sounding reviews, but Im giving this a few starts because Monoprice themselves were able to back their own product, even though they had no direct record of my order (since I got it through Amazon, not monoprice directly).

If you need a dual link DVI adaptor, this may be a good fit. It may break, but it was proven to me today that Monoprice backs up their products. I will likely consider getting other compoenents like this directly through them in the future.
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on March 24, 2014
I purchased this for my 2013 Macbook Air 11" to connect to a Dell 30" WFP3007 monitor. It does work, but there is regular distortion.

The distortion is irregular but happens when I run either OS X (10.8.5) or Windows 7 64-bit. It looks like pixels that are the wrong color. They usually come in dashed rows or columns. They most frequently occur in mid-gray-tones, but can occur anywhere. Usually it is fully-red or fully-green pixels. The distortion is usually fixed when the monitor's display is unchanging, but moving windows or even the mouse cursor can cause the distortion to go away or change.

I should note that this monitor works perfectly fine with my desktop computer, which has an AMD 5870 card driving two of these Dells.

There is some possibility that this distortion is caused by my Gefen DVI-DL switcher that allows me to use the monitor with the laptop or the desktop. However, the desktop mode does not have the distortion, so I feel that the switcher causing it is unlikely.
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2 of 3 people found the following review helpful
on August 23, 2012
I use this with a Retina Display Macbook Pro to connect one of two external displays; a 30" Cinema Display, and a 27" Samsung. I have an Apple Dual DVI adapter and this one. I regret paying full price for the Apple product, as it constantly shows static on the screen when booting up which requires me unplug the port several times and sometimes turn off the monitor and turn it back on before the static overlay disappears. This seems to be a common thing with the Apple product. I have not had any such issues with the Monoprice version. It works flawlessly on both of my monitors, as I have tested it. It has no problem with the 2560x1600 of the 30" or the 2560x1440 of the 27". Colors are as they should be. The Monoprice adapter piece is only slightly warmer than the Apple version. The previous reviewer likely had a defective unit.
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