I've got a MBP (2015) and am looking to purchase the Dell UltraSharp U3415W. I still don't really understand how all of the different connections interact. What's the most efficient way (i.e. least amount of cords and adapters) to make sure that a) my MBP is connected to the monitor b) is charging c) is connected to an ethernet cable d) is connected to an external keyboard? The Dell has the following connections: 1x HDMI 1x MHL 1x Mini Display Port 1x Display Port (v 1.2) 1x DisplayPort (MST) 4x USB 3.0 Downstream 2x USB 3.0 Upstream 1x Audio From what I understand, connecting the DisplayPort (MST) to a thunderbolt via an adapter will produce the best quality and allow for the MPB to be charged, too. Is that correct? If I plug the ethernet cable into a USB adapter, and then plug that into one of the Dell's USB upstream ports, will my MBP be connected to the internet? Then just use the other upstream port for my external keyboard? I also have an external mouse that works with usb and also bluetooth. I assume the bluetooth will still work with the MBP screen shut? If not, what would I do with that, considering the two upstream ports would be occupied? Buy an additional adapter with more upstream ports?