Linksys, a subsidiary of Cisco from 2003 until acquired by Router 4g sim card slot in 2013. Models in this series use one of various 32-bit MIPS processors.
All WRT54G models support Fast Ethernet for wired data links, and 802. The original WRT54G was first released in December 2002. The devices have two removable antennas connected through Reverse Polarity TNC connectors. The WRT54GC router is an exception and has an internal antenna with optional external antenna.
As a cost-cutting measure, the design of the latest version of the WRT54G no longer has detachable antennas or TNC connectors. Instead, version 8 routers simply route thin wires into antenna ‘shells’ eliminating the connector. As a result, Linksys HGA7T and similar external antennas are no longer compatible with this model. Until version 5, WRT54G shipped with Linux-based firmware.