Dynamix C-MDPAC-DVI 0.2m Mini DisplayPort to DVI Active Cable Converter. Max Res: 4K30Hz (4096x2048)

This adapter would not power a 1440p monitor off my Macbook. It would run a 1080p 27inch monitor fine, but would not work with my 1440p 27inch display. This adapter would not power a 1440p monitor off my Macbook. It would run a 1080p 27inch monitor fine, but would not work with my 1440p 27inch display.

Needed this to add a 3rd DVI monitor with my Mac Pro's Thunderbolt 2 ports. Passive adapters work up to a maximum of 2.

This 3rd adapter works perfectly and is much cheaper than Apple's active converter which also uses up a USB port. Needed this to add a 3rd DVI monitor with my Mac Pro's Thunderbolt 2 ports. Passive adapters work up to a maximum of 2.

This 3rd adapter works perfectly and is much cheaper than Apple's active converter which also uses up a USB port.

Works perfectly on my Surface Pro 4 where others (non active) have failed. Good feel to it too. Works perfectly on my Surface Pro 4 where others (non active) have failed. Good feel to it too.

Another thumbs up for working with the Surface Pro 4 dock.
fyi - semi-related, it turned out my (6 year) old BENQ monitor is not compatible with the SP4 or dock, lucky I had another newer monitor to test with :) Another thumbs up for working with the Surface Pro 4 dock.
fyi - semi-related, it turned out my (6 year) old BENQ monitor is not compatible with the SP4 or dock, lucky I had another newer monitor to test with :)

I needed an active Mini Display Port to DVI converter, for my Surface Pro 4 dock (passive does not work with the dock). This thing works perfectly. The price was decent. I'm happy with it. I needed an active Mini Display Port to DVI converter, for my Surface Pro 4 dock (passive does not work with the dock). This thing works perfectly. The price was decent. I'm happy with it.