The power cable with most heavy duty equipment (and that looks like Cisco brand) is usually SJT. Cheaper PCs come with PVC RWW.
The "wall wart" looks to be a Tripplite heavy duty surge protector. Those things are heavy enough that they'll pull out from the outlet if you don't use the mounting bracket (like this one didn't). The bracket uses the faceplate's screw, which is covered up in the picture.