The Branch is a hub that utilized USB Type-C interface at the other side which will be connected to the type-C port of the new MacBook and then giving you standard 2 x USB 3.0 ports and mini display port at the other side. There is also another version of Branch that features a 64GB storage option.
If you are planning to buy the latest MacBook by Apple which only have a single USB type-C port then you might also want to check this tandem hub which you will find useful.
For your information, the new 12-inc MacBook is totally redesigned from the keyboard, chassis, ports reduced to use a single type-C USB port for charging, transferring of files, syncing and etc. in short all in one for that single port.
If you are still undecided whether to buy the new MacBook knowing that it has only 1 port, then you want to continue reading because a Kickstarter campaign has recently announced, dubbed as Branch which aims to solve this lack of port thing about the latest MacBook.
You can visit directly the Branch Kickstarter page to find more information about the device.