wesimi USB 3.1 Type-C to DisplayPort Adapter,Support 4K output with Aluminium Case USB-C to DP DisplayPort Female for Apple New Macbook, ChromeBook Pixel

Works perfectly with the new mac pro and old 27inch imac screens (USB only not the firewire ones)

I bought this in October 2017 to use with my Macbook Pro with a Dell u2715h. Several times a day, the screen blacks out and I have to spend time unplugging the adapter from the display port cable and reconnecting. Then plugging the adapter end into each of the two usb-c ports on my MBP until the screen connects - it's very annoying and interrupts my workflow.Yesterday, I plugged the adapter into my laptop and nothing, the Dell screen would not connect at all. After unplugging, reconnecting and trying in each usb-c port I smelled burning. The adapter stinks of burning metal and plastic. The displa USB Type C Adapter, wesimi USB C Type to Mini DisplayPort/Mini DP Adapter Cable With Aluminium Case Support 4K resolution for Apple New Macbook, ChromeBook Pixel - Silver y port cable has not been effected as I've tested it on another machine.Avoid this if you can as it may damage your laptop.

So far it's great. I have an "old" 2011 iMac which I now use as an external monitor. It does the job.

Very unreliable connection. Several times a day the display cuts out and have to repeatedly unplug and replug in other ports until it reconnects. It then sometimes stays solid for a while or cuts out again after a few minutes. Socket is also slightly shorter than mini display port plug, leaving about 2mm of the plug exposed. Adaptor isn't marked with any of the required hallmarks like CE so I suspect it's not even safe to use (I just noticed one reviewer said that theirs caught fire!)

Successfully connect a new MacBook Pro 2016 USB-C to an Apple LED Cinema display with a Minidisplay connector.

does exactly what he says. i needed to connect 2017 touchbar MBP to Apple Cinema Display

Used on a MacBook pro 2017 to a Dell 4k monitor. It worked fine for a month. Now I get screen cutouts straight to black. Yesterday I noticed there is scorching on the wire and it smells burnt.Do not buy.

Perfect for intended use. Works well