Accell mDP to VGA Adapter - Mini DisplayPort to VGA (HD-15) Active Adapter - AMD Eyefinity Certified, 1920x1200 (WUXGA) @60Hz, Black

I bought this device because I always wanted to have a 2 monitor set up, but I never knew how techy people pulled it off.I only stumbled onto this product after I took a long look at the ports on the back of my desktop and googled what in the world a display port was. The search led me to this awesome adapter.The adapter is great, there was no software, I just plugged one end into the display port and the other to my vga cable coming from my monitor. Nonetheless there are some short hand instructions you need to know to enable 2 monitors.Here's the quick way:1. After the monitor is plugged into the adapter and into the computer (and the monitor is on, sorry) close all the windows on the computer.2. Click the start menu, and choose control panel.3. Click Appearance and Themes, and then click "change the screen resolution"4. After that click you will be in the settings tab of the display properties window.5. In the gray box, select the second monitor, then (three quarters of the way to the bottom of the window) click the box labeled "Extend my Windows desktop onto this monitor"6. You're all set, though feel free to drag the monitor around in the gray box to make the monitor line up the way you'd personally like.In summary:Pros: Great product for extending your desktop on to a second monitor. Plus no software or drivers to mess with.Cons: This may be silly, but it could be a bit smaller, currently it's about the size of bag of skittles, though the size is mostly meaningless since for me it sits behind the desktop tower.Overall, I recommend this product, and have bought the adapter for others

When I got it, it worked just fine with my ATI 5870. However, I no longer run 3 monitors on that computer.I recently ordered an HD5450 low profile card  HIS Radeon HD 5450 1GB (64bit) DDR3 Eyefinity DisplayPort Dual Link DVI (HDCP) PCI Express 1X Low Profile Video Card Retail (RoHS) H545H1GD1  for work and tried to use this adaptor to have 3 monitors, but no such luck.The specs for the HD5450 (from both ATI's and HIS's websites and the box it came in) state that this card had "Three independent display controllers" and can "Drive up to three displays simultaneously with independent resolutions, refresh rates, color controls, and video overlays"However, I was completely unable to show 3 monitors at once with this adaptor. I could run any two ports, but not all three at once. Perhaps the problem is the card, perhaps this adaptor, I do not know without spending $100 on a different adaptor or $200 on a 1920x1080 monitor with a DisplayPort input. HIS points you to ATI's website for support, which at the time showed this adaptor as a PASSIVE one (which would behave as above), but now it shows it as an ACTIVE one. Perhaps Accell has fixed the issue that caused ATI to downgrade it to a Passive adaptor and mine was made before that fix.

After trying 4 other active cables (listed below) this is the cable that finally worked for me to run 3 screens off my Alienware M17x R3 laptop. Monitors are HP Pavilion 22xi IPS LED. There seems to be some sort of flickering and screen drop issue with the digital connections (I tried DVI and HDMI), but the problem went away completely when I switched to this VGA cable.Here are the products that did not work for me.Plugable Active Mini DisplayPort to HDMI Adapter (Supports displays up to 4k / UHD / 3840x2160@30Hz) $19.95gofanco Gold Plated Mini Displayport to DVI Active Converter for 4k Ultrahd Monitor $17.99Accell B087B-006B UltraAV Mini DisplayPort to DVI-D Single-Link Active Adapter ATI Certified (Black) $27.99Cable Matters Gold Plated Active Mini DisplayPort to DVI Male to Female Adapter - Eyefinity Compatible $18.99

I previously bought a brand new active displayport to DVI adapter ($45 off ebay, but it normally goes for more like $90), and while it did work, it constantly would shut off when going into games and changing resolutions etc, so I had to turn the monitor power off and back on to get that screen to show up again. I never could find a way to fix it and after checking online I saw many others having this same problem.The solution: Get this displayport to VGA adapter for $25. it is cheaper and works perfect, I have never had the screen go blank or had to cycle the power on it. Although it's analog rather than digital it still looks and works great. And since I am using analog for one of the other displays as well it's nice and balanced with HDMI in the middle and VGA on left and right sides.I am using this for eyefinity on an Alienware m17x-r2 laptop, works great and highly recommended if you are interested in eyefinity. Save yourself the time and trouble and don't even mess with the displayport to DVI/HDMI adapters.

I have an AMD Radeon HD 5770 video card, which can support 3 monitors natively. I was already using the two DVI ports, but needed a way to add my TV so it could double as a monitor as well. I originally purchased a passive displayport to HDMI adapter ( High Quality Black DisplayPort Male to HDMI Cable Male - 6 Feet / 2M ), but that didn't work. I found out that you have to have an active converter not the passive one that I had. So I purchased this device. I got it, connected it, and all was well. It works like a charm. I connected it from the video card to my Samsung TV and it looks great. Just plug and watch. It was that simple to setup. I highly recommend this for someone that is in the situation that I was in.

Does exactly what I asked of it. A surprising number of competitor products fail to work correctly. I am currently running an Acer 24 inch monitor (1920 by 1200 pixels, 24 bit colour, 60fps) using this device - with a video signal sent from my AMD (ATI) 5870 Radeon desktop graphics card. If you're after Eyefinity, or have a series 5 or newer graphics card with DisplayPort output, but an older VGA monitor, this bit of kit will sort you out.Thumbs up.

Does exactly as described. I bought one of these a year or so ago and recently bought another. great bit of kit.

does what it says on the tin :)

It certainly did the job for me. I was at my wits end wondering how I could make the DP port work in a 3 monitor situation. It turned out that it was essential to use an active adapter. I connected the plug and it worked first time.

Works fine without any quality loss.