10BASE2, also called thinnet or cheapernet, is an Ethernet standard that uses thin RG-58 coaxial cable with BNC connectors. Devices connect through BNC T-connectors, with 50-ohm terminators required at both ends of each segment. Supporting speeds of 10 Mbit/s, 10BASE2 allows a maximum segment length of 185 meters. While cheaper and more flexible than 10BASE5, it was fragile and difficult to maintain—any bad connection could disrupt the entire network. Networks could not be extended without downtime, making them vulnerable to failure. These limitations led to widespread replacement by 10BASE-T twisted-pair Ethernet.