Apc Apc Pnetr6 Surge Module For Cat6 Or Cat5/5E Network Line, Replaceable, 1U, Use With Prm4 Or Prm24 Chassis Power_Supplies_Or_Protection - Walmart.com
APC LINE-R 600VA AUTOMATIC VOLTAGE REGULATOR, 2YR WTY - Intelli-Systems
APC Surge Module for CAT6 or CAT5/5e Network Line, Replaceable, 1U PNETR6