Hubs are sometimes called concentrators; they allow each node on a network to communicate with all other nodes. Most hubs have status lights on them for monitoring the condition of the network they are attached to. A "hub" is a device used to interconnect a group of two or more computers, and other network devices together. They also allow for a group of computers to share a common "uplink" connection to a bigger network. Seamless integration of wireless network components, allowing full resource sharing.