The Avocent? DSR?1021 KVM switch is specifically designed for IT administrators who need to easily troubleshoot, reboot or even power cycle servers or serial devices in branch offices, avoiding the need for costly on-site service calls. The 8-port DSR1021 switch expands the Avocent DS Series patented, field-proven KVM over IP technology. The DSR1021 switch includes external modem support, so IT administrators can manage remote devices if the network is down.