The USB-C VGA Multiport Adapter lets you connect your MacBook with USB-C port to a VGA display, while also connecting a standard USB device and a USB-C charging cable
Use the Mini DisplayPort to VGA Adapter to connect your Mac to a standard analog monitor, projector, or LCD that uses a VGA connector or cable.
Every Mac with a Mini DisplayPort allows you to connect an external display or projector using an adapter.
The Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter lets you connect Thunderbolt and Thunderbolt 2 devices - external hard drives and Thunderbolt displays, for example - to any of the Thunderbolt 3 (USB-C) ports on your MacBook Pro.
Use the Mini DisplayPort to Dual-Link DVI Adapter to connect your Mac to a 30-inch display that includes a DVI connector, such as the 30-inch Apple Cinema Display HD, and enjoy the ultimate widescreen canvas with a resolution of 2560 by 1600 pixels.