j5create’s JCE133G is a simple, one-piece external adapter that plugs into the USB-C™ port on your Ultrabook™ or MacBook®. The JCE133G is the ultimate solution if you do not have an Ethernet port or if you just want to increase your speed. The elegantly designed JCE133G uses an RJ-45 connector that supports 10/100/1000 Mbps Ethernet performance. The JCE133G allows you to add networking capabilities to a computer without them through a Wi-Fi connection.