This is the YAMAHA high-performance VPN/VoIP router "NVR510". It is suitable for building full-fledged networks in businesses, offices, SOHO environments, and for VPN and IP phone lines. Specifications Overview • LAN 4 ports + WAN 1 port (Gigabit compatible) • USB port x1, microSD slot x1 • VoIP / IP-phone compatible (with SIP, TEL ports) • VPN (IPsec etc.) / DHCP / NAT / Firewall etc., with comprehensive router functions • Compatible with small ONUs — can connect to fiber optic lines Condition • Used, operation confirmed (basic startup confirmed by powering on) • Slight scratches/signs of use on the exterior (see photos for details) • Body + power adapter only. Antennas and other accessories are not required. • Network configuration is the responsibility of the buyer Included Items • NVR510 main unit • Power adapter Notes • Due to being a high-performance router/professional equipment, network knowledge is required for setup and operation • Used item, no claims or returns accepted