There is no technical issue.
However, if you choose a Slingbox without Wi-Fi, i.e. anything other than the 500, be aware that you will need connections to both your router and a U-Verse DVR at the same location. For example, if your TV sets are in the living room and master bedroom, but your cable modem and computer is in the family room, you may need to run a long Ethernet cable.
Thank you for posting in the forums! I know that your question has already been answered but I have a link below that could assist you in comparing the 350 & 500. It lets you know the specs between the two boxes so if you have any other questions with our products this will be a good aid for you!
Also if you have ANY other questions feel free to give us a call at (1-877-467-5464). That is a direct number for Sling Media. If there's anything you want or need to know just call in.
I hope this information helps you with any questions you may have!
The Sling Moderation Team