The RB493G has nine Gigabit ethernet ports, three miniPCI slots, and two switch chips, so the ethernet ports can be connected together in two switch groups for wire speed throughput.
The RB493G also has a USB 2.0 port and a microSD card
Design, Installation, and Support of all kinds of networks (LAN, WAN, MAN ...)
Implementation of Wireless Networks (PtP, PtMP(WDS), Mesh Networks)
VPN & VOIP solutions for geographically variable or multi office organizations
Implementation of all servers (ISA, Exchange, Citrix ...) in all environments (Win2003, 2008, UNIX, Linux)