Like the others have said, that should work. I looked that one up on Amazon, and if it's the same one you're talking about, it does only have a max output of 15W per port. Which is fine for those two cams, but if you ever decided to get a cam that uses more power, like the 823A, Duo floodlight, or standalone floodlight, it won't work.

I use this one to power 3 cameras, and it can do 60W total, with up to 30W per port. (it does take up two spots on the originating switch/NVR if you do want to use all 4 ports)