The Cisco 3945 Router features 3 RJ-45 ports and a management port, supporting Gigabit Ethernet technology for ultra-fast network speeds. With a data transfer rate of up to 1000 Mbps over twisted pair cable, this router is ideal for creating a wired network that connects multiple PCs, allowing for shared internet access and file transfers. Its versatile design allows for rack-mounting, desktop, or wall mounting, making it suitable for various installation environments. The built-in power supply ensures that all components receive accurate voltage, enhancing the router's reliability. This model is part of the Cisco 3900 Series Integrated Services Routers, which are engineered to support rich-media collaboration and virtualization while maximizing operational cost savings.