A Gigabit Interface Converter (GBIC) is a transceiver standard, frequently used with Gigabit Ethernet and by fibre channel. By adopting a standard electrical interface which is hot swappable, one gigabit ethernet port can support a wide range of physical media, from copper to long-wave single-mode optical fibre, at lengths of 100km or more. The GBIC standard offers flexibility in networking equipment, as opposed to a fixed physical interface configuration. Where multiple different optical technologies are in use, an administrator can purchase relevant GBIC's as needed for each link. Ultilising GBIC lowers the cost of the base system and gives the network administrator more flexibility. On the other hand if it is known that a switch will mostly be a copper port type, purchasing a switch with that port type built in will probably be cheaper and take up less space per port.