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CompuLab 4K Display Emulator (fit-Headless 4K)

4.2 out of 5 stars 63 customer reviews
| 24 answered questions
Price: $25.00 & FREE Shipping on orders over $49. Details
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    This fits your .
  • Enter your model number to make sure this fits.
  • Fit-Headless 4K supports 30 different resolutions from 800x600 up to 4088x2304
  • Works with any operating system, no software installation required
  • Plugs into HDMI port, does not require additional power
  • Works with Mac Mini, CompuLab fit-PC and Intense PC and with any other HDMI enabled computer
  • Native resolutions of MacBook Pro, MacBook Air, Ultrabooks and popular laptops
56 new from $25.00
$25.00 & FREE Shipping on orders over $49. Details In Stock. Sold by Compulab Ltd. and Fulfilled by Amazon.

Fulfillment by Amazon (FBA) is a service we offer sellers that lets them store their products in Amazon's fulfillment centers, and we directly pack, ship, and provide customer service for these products. Something we hope you'll especially enjoy: FBA items qualify for FREE Shipping and .

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Frequently Bought Together

  • CompuLab 4K Display Emulator (fit-Headless 4K)
  • +
  • CompuLab Display Emulator (fit-Headless)
  • +
  • CablesOnline, DVI Graphics Card Display GPU Detection Monitor Dummy Plug Adapter, VE-D11
Total price: $50.99
Buy the selected items together

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Product Information

Technical Details

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Other Technical Details
Brand Name CompuLab
Item model number fit-Headless 4K
Item Weight 0.3 ounces
Product Dimensions 2 x 0.8 x 0.5 inches
Item Dimensions L x W x H 2 x 0.8 x 0.5 inches
Color Black

Additional Information

ASIN B00JKFTYA8
Customer Reviews
4.2 out of 5 stars 63 customer reviews

4.2 out of 5 stars
Best Sellers Rank #188 in Computers & Accessories > Computer Accessories > Monitor Accessories
Shipping Weight 0.3 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available April 9, 2014

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers
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Customer Reviews

Top Customer Reviews

5.0 out of 5 starsFantastic and well built unit
By Brian Stucki on May 31, 2014
These are fantastic units for getting full GPU performance from a headless Mac mini and other servers. They are built solid. We have hundreds of these (and the non-4k version) running at Macminicolo and they really help the screen sharing and video rendering performance.
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5.0 out of 5 starsWorks perfectly on a Late 2013 Mac Pro
By Brea Kevin on July 9, 2014
Verified Purchase
Wow, this little jewel is fabulous! Works perfectly on a Late 2013 Mac Pro running "headless" (remotely controlled with no local monitor plugged into the computer).

Makes a wide range of display options (from 640 x 480 up to 3840 x 2160) for the headless computer available to the controlling computer. I am able to switch these display resolutions remotely with no "black screen" issues -- for me, this has solved the "black screen" display issue I experienced when attempting to run my headless Mac Pro (will work on the Mac Mini, as well, according to other reviewers). This product has also substantially increased the responsiveness of the remote display since the display emulator allows the headless computer's video acceleration to be utilized.

So glad I made this purchase. Perfect!
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5.0 out of 5 starsworks well as part of a virtual dual monitor setup!
By Dennex on September 3, 2014
Verified Purchase
I previously bought the regular "fit-Headless" HDMI plug, which did not support the resolution I needed for a virtual extended display (it did not support 1366 x 768). This was one does, along with many other "standard" resolutions. I am currently using VNC software on both my chromebook and Linux Mint laptop. The chromebook has VNC viewer for Chrome installed and is set up to be used as an extra display for main laptop. Much more convenient than lugging around an extra monitor.

This product does not depend on operating system as it is hardware driven. Thus I could use this setup on Windows and Mac laptops as well too!
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3.0 out of 5 starsand at something like 5-10 FPS (again
By John Hoffman on March 12, 2016
Verified Purchase
kinda finicky. has issues keeping the same resolution, sometimes. I wanted to use it to have a 4k remote desktop session on my Mac Mini from my desktop. it never really worked, but that's at least partially my fault. i didn't think to look up my Mini's max resolution (2560x1600). 4k only worked once, and at something like 5-10 FPS (again, probably something I didn't think to consider). oddly, it wouldn't work at all at 1440p. at 1080p it mostly works.
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5.0 out of 5 starsWorks great with Win7
By T. Traub on November 5, 2015
Verified Purchase
I have a headless Intel NUC5i5RYH compact computer running Windows 7, and I use VNC to access the graphical user interface. When I unplugged it from the display monitor and rebooted, it came up in low res mode and refused to run at a higher resolution because it does not detect a display. Annoying.

Then I discovered this ingenious gadget which neatly solved the problem. The NUC (stupidly) uses a mini-HDMI, so I had to get an adapter. Then I plugged it in, rebooted, and it came up in 1924x1600 mode without the need for a real display to be plugged in.

I opted for the 4K model even though it's a bit overkill, just for future needs. This is a cheap and convenient solution to a weird problem. By the way, it's not just Windows that has this problem when you run the computer without a display. I encountered the same issue with two flavors of Linux (Ubuntu 15 and OpenSuse 13.1).
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5.0 out of 5 starsAwesome for VNC!
By FLYingG0D on April 29, 2015
Verified Purchase
This little device is really awesome!

I have a computer that I access almost exclusively through VNC. I have a small monitor connected to it that gives me a small amount of desktop space, but I wanted more. I connected this fit-Headless 4K to the secondary monitor connector on my video card. I was able to expand my desktop area by a lot! This was immensely helpful!

This works great if you need your computer to think you have a high resolution monitor on it, but don't really need more physical monitors!
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1.0 out of 5 starsThis is not the dummy plug you're looking for
By David Heitman on September 6, 2016
Verified Purchase
OK, this thing is a total piece, and I'll be returning it immediately. This is just goofy market segmentation at its worst. These guys appear to sell three adapters: one for 1080p and below, one for up to 4k (this one) AND, this is the kicker, they produce a third adapter, the fit-headless gs. Now, as far as I can tell, this thing is just an edid chip on an hdmi plug. That's it.

This particular adapter will, as advertised, go up to 4k resolution, no problem. What they fail to mention (and what I wish I'd seen in the reviews that mention it), is that this adapter will only go up to 15Hz refresh rate at 4k. Which, is pretty much pointless and useless. I'm not so much annoyed about that fact as I am that they don't bother to mention the refresh rate limitation anywhere in the product description. So, they charge at $5 price bumps for products that, so far as I can tell, are just differently-programmed edid chips in each of the three products, and they fail to actually explain the limitations of each. I'll change my review when they clearly state the limitations of the product on this page, until then, no go.

And, if you're like me, and using this for a headless (sort of) gaming rig, and you need 4k@60Hz, you apparently need the fit-headless gs model, that one will (according to the manufacturer's website) do 4k@60Hz.
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5.0 out of 5 starsResolution up to 3840x2160 is selectable Works nicely with Share Display on MAC doing screen share with ...
By kw on October 28, 2015
Verified Purchase
Connected to "Mac mini Late 2014" directly into the HDMI port The connector gets recognized in Display profile as "fitHeadless4K".
Resolution up to 3840x2160 is selectable
Works nicely with Share Display on MAC doing screen share with the Mac Mini.
Just make sure you push the device in all the way.
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Most Recent Customer Reviews

3.0 out of 5 starsThe EDID is a Bit Odd

This device has an HDMI 1.4-style EDID, not a 2.0-style EDID. Some of the frame rates it specifies are odd, 52.7, 14.63, and 10.7Hz. Read more

Published 10 days ago by C. Gollnick
5.0 out of 5 starsPlug and play baby - lets me log into a ...

Plug and play baby - lets me log into a headless mac mini running os 10.6.8 via my 27-inch iMac and view at full resolution. Outstanding!

Published 20 days ago by Paul Wilson
5.0 out of 5 starsFive Stars

Perfect

Published 25 days ago by GRM
5.0 out of 5 starsWorks Great

Amazing. Perfect for using an old PC as a network device and connecting remotely. Works really well with Microsoft RDP

Published 1 month ago by KRISTY POTGIETER
2.0 out of 5 starsBe warned, these emulators provide 4K at 10hz, which isn't very good...

First, I'll start with the disappointment I had with these:
These devices do not operate at adequate refresh rates when at 4K. Read more

Published 2 months ago by Duncan L Armstrong
5.0 out of 5 starsWorks as intended

Works fine. Some of the resolutions are a bit quirky on the device I am using it on.

Published 3 months ago by P. Ryan
5.0 out of 5 starsFive Stars

Does what I needed! Shuts off my laptop screen when I'm sending the feed to my TV.

Published 4 months ago by Richard Brumley
5.0 out of 5 starsIt does what it designed for.

As described. 6 month no issues.

Published 4 months ago by S. M.
5.0 out of 5 starsFive Stars

Works well for Mac Mini webserver

Published 4 months ago by Buyer
1.0 out of 5 starsBeware lower refresh rates (10Hz to 15Hz)

I don't write many reviews but this time I decided to take the time to do so. There are two reasons I'm giving this one star. Read more

Published 5 months ago by Anthony A Castiglia

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