Linksys WRT54G series is a Wi-Fi capable residential gateway that can share internet connections among multiple computers via 802.3 Ethernet and 802.11b/g wireless data links. WRT54G is the first consumer-level network device that released its firmware source code to satisfy the obligations of the GNU GPL, allowing programmers to modify the firmware to change or add functionality to the device. This product is well suited for small businesses and is also user-friendly for novice home computer users.
The Linksys WRT54G series is a family of Wi‑Fi capable residential gateways that share Internet connections via Ethernet and 802.11b/g wireless links. The series includes many variants (WRTS4G, WRTS4GS, WRTS4GL, WRTS4GX, etc.) with differing hardware revisions, antenna configurations, and flash/RAM capacities.
The routers are popular for third‑party firmware projects such as DD‑WRT, OpenWrt, Tomato and HyperWRT, which add features like SpeedBooster, VLAN support and enhanced QoS. Hardware revisions affect firmware compatibility, with later versions reducing flash memory and removing detachable antennas.
| Network switch ports | 4+1 Ethernet ports (four LAN, one WAN) |
|---|---|
| Antenna configuration (early models) | Two removable antennas with Reverse Polarity TNC connectors |
| CPU speed (early version) | 125 MHz |
| Flash memory (early version) | 16 MB |
| RAM (early version) | 4 MB |