LiNKSYS v3 EtherFast Cable/DSL Router Model BEFSSR4 with 4-port Switch
NOTE: Used, in good shape, comes in different box, all pieces included
The Linksys EtherFast Cable/DSL Router (commonly designated model BEFSR41) is a classic, wired-only broadband router featuring a built-in 4-port 10/100 switch, NAT technology, and an SPI firewall. It allows multiple computers to share a single cable or DSL internet connection.(Note: Your query mentions "BEFSSR4", which is a common typo for the widely known Linksys BEFSR41 hardware series.)Core Specifications

• Ports: 1 10/100 Mbps WAN (Internet) port, 4 10/100 Mbps LAN (Ethernet switch) ports
• Network Standards: IEEE 802.3, IEEE 802.3u (10/100 Fast Ethernet)
• Security: Built-in NAT (Network Address Translation) and Stateful Packet Inspection (SPI) firewall
• Management: Web-based browser configuration utility
• Power Requirements: External 9V AC power adapter (approx. 1000 mA)

Key Features

• Wired Sharing: Connects up to four local wired PCs or devices directly, with expansion via daisy-chaining.
• Single IP Operation: Shares one purchased Internet IP address across your entire local network.
• Easy Setup: Utilizes basic browser-based management tools and support for Universal Plug-and-Play (UPnP) on later firmware revisions.