PoE Injectors › Forums › IP Phones › Cisco Phones Tagged: cisco, reverse PoE, ws-cisco This topic contains 1 reply, has 2 voices, and was last updated by Stephen 2 years, 4 months ago. Log In Register Lost Password Viewing 2 posts - 1 through 2 (of 2 total) Author Posts May 21, 2015 at 9:45 pm #5163 PoE QuestionsParticipant I need a POE injector to support the CISCO 7940 series. Which one works? May 21, 2015 at 9:48 pm #5164 StephenKeymaster Either you need our WS-CS-RJ45 in order for these to work with an existing PoE switch: https://find-a-poe.com/product/WS-CS-RJ45-4x/ Or you need our WS-POE-8-48v60w with our WS-Cisco cable – this is 10/100 and powers thousands of these Cisco phones. Author Posts Log In Register Lost Password Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic.