Accell mDP-2DP Multi Monitor Splitter - Mini DisplayPort 1.2 Multi-Stream Transport (MST) Hub - 1x Mini DisplayPort connector, 2x DisplayPort outputs,Black

I am using this on a desktop computer with four monitors running off of a Radeon R9 280X. I have one Dell U2913WM and three Asus VN248H-P monitors. Under Catalyst 14.6 drivers, I was able to get all four monitors to extend and life was good. I had the Dell connected via DisplayPort and the Asus monitors connect via HDMI and 2 DVI to HDMI cables. When the Catalyst 14.9 drivers were released around October 2014, something broke and I could no longer get a 4th monitor to extend with the video card. I reverted to Catalyst 14.6 and continued with that until Catalyst 14.12 was released...it didn't fix the problem. I upgraded the Catalyst drivers to the 15.3 Beta drivers this past weekend and it was still broken. I was fully prepared to have to buy an NVidia card since they reportedly work better with 4 monitors. On a whim, I decided to order this 2-port MST Hub and connected the Dell via DisplayPort, one Asus visa Displayport to an Active DisplayPort to HDMI adapter, one Asus via HDMI, and the third Asus via DVI to HDMI cable. Immediately all four monitors are extendable again and I can also set up Eyefinity across the three Asus monitors. Life is now good again...all thanks to this little gizmo. If you are trying to setup four monitors with the latest Catalyst drivers, this little fellow is your ticket to multi-monitor bliss. I don't know why AMD's drivers stopped supporting my configuration (or in fact if it ever really was supposed to work...but it did), but this saved me hundreds of dollars!

EDIT: I bought & installed this in Feb 2018. It is now Mar 2020, and it still works perfectly. I just started working from home and bought a second one for my work laptop. It works great too.This MST hub works perfectly with my Microsoft Surface Pro 3 tablet and Microsoft 3Q9-00001 docking station.It works equally well when plugged into the built-in mini Display Port on the Surface tablet, or when plugged into the mini Display Port on the docking station.I am using it with two monitors that have HDMI inputs. I bought cables that go from DisplayPort to HDMI. Here's the link for the DisplayPort-to-HDMI cables (copy it and paste it into your browser's address bar):https://www.amazon.com/gp/product/B01EY67S6OThe whole setup works perfectly. It took me less than 5 minutes to setup.Via the Windows 10 "Projector" menu (press-hold the "Windows" key on the keyboard, and tap the "P" key to access this menu), I can choose to mirror or extend the display. "Mirror" displays the same image on all three displays (built-in surface display plus two external monitors). "Extend" allows me to display different windows on each of the three displays.The docking station also has 5 USB ports, allowing me to plug-in a full-size desktop keyboard and mouse.The combination of this MST hub, plus the docking station, makes my Surface Pro 3 a true "desktop" PC!!!

There I was, enjoying a beautiful morning at the home office, coffee in hand, the sound of rain whisping me away to dream land when suddenly I was awoken by the epileptic flash of my monitors struggling to be displayed correctly by this product. Once I collected myself off of the floor, post seizure, drenched in coffee, I saw that only one of the monitors had video. My computer graphics was able to recognize the blacked out display so I busted out my 3rd grade thinking cap from the top of the closet, tightened the chin strap, and stared out the window pondering the wonders of the universe. It them came to me to switch the cables to see if that would do anything, a few seizures later, sadly it did not. Back to the window, the smell of burnt bacon filling the room from the excessive use of brainpower, I decided to try two new DP cables to no avail and more seizures. A whole pan of bacon later, I decided to try different power sources, by the time I pulled myself off the floor, incontinent from the seizures, nothing had changed. Needless to say I initiated the return with Amazon only a few hours after receiving it. Save the money and go with another....time for a shower.

Got the 1 mini display port to 3 display port adapter. I was able to use this to connect to my surface laptop v1 to 2 additional external monitors to extend the display, it was easy to connect, no setup needed . I was previously using my surface laptop with a remote desktop to with 1 external monitor via a mini display port to hdmi cable and I was experiencing a slight lag when I used remote desktop. I've noticed that since using the display port inputs on the external monitors now there is no longer a lag with remote desktop. One point of concern is while I was rearranging my external monitors I noticed the display connection was cutting in and out. If I handle and move around the adapter the display connection will cut in and out which makes me think the connection is not great, once the adapter is stationary and not moving around it works with no issues.

I've been using this for a week, and it works beautifully. Because of the coronavirus pandemic everyone in my office was ordered to work from home. My home setup is an Asus ROG 752 gaming laptop with a wireless keyboard and mouse and connected to two 24 inch monitors via this MST hub. In extended desktop mode, the laptop screen is mirrored on one monitor, and the desktop is extended across the second monitor. The only setup that was required after connecting the MST hub was to specify the scale, layout, and resolution in the Win 10 Display Settings.The GeForce 980M video card has 4GB of RAM and displays a resolution of 1980x1200 on each monitor. I wish I had 8GB of video RAM to get a higher resolution.The MST hub works perfectly. There is no flicker or delay. I can attend a Zoom meeting on one monitor and remote login to my office on the other monitor. When the meeting ends, I stretch the remote login window across both monitors.