Aten PE5221T 0U 21 AC outlets (18xC13 & 3 x C19) with built-in 10/100 Mps Ethernet port and Supports TCP/IP, UDP, HTTP, HTTPS, SSL, DHCP, SMTP, NTP, DNS, Auto Sense, Ping, Telnet, and SNMP V1,V2&V3. It has 2-level account and password security with support for eco Sensors Energy Manageent Software and Browser access via IE, Firefox, Chrome, Safari and more. It features bank level power metering and monitoring, environment monitoring via external sensors for rack temperature and humidity readings with threshold alerts as well as real-time aggregate current, voltage, power, and aggregate power dissipation displayed in a browser-based UI.