Hi, My name is Eric Moyers. I am a Network Support Engineer in the Cisco Small Business Support Center.
Currently there are no Cisco/Linksys POE approved injectors for this device or any of our other small business products. Our recommendation for powering these units are to use either the supplied power adapter or a POE Switch that is 802.3af compliant. Any of our switches with a P in the model number would be perfect. Here is a link for you to our switches.
http://www.cisco.com/cisco/web/solutions/small_business/products/routers_switches/index.html
While it is possible for that Cisco Enterprise Injector to mentioned above should work, It has just not been tested so we can not completely recommend it.
Hope this helps.
Eric Moyers
Cisco Network Support Engineer
1-866-606-1866
