Xbox Series Rumor: Xbox Series X prototype hardware images leaked A potential look at the system's back ports. Alleged images of an Xbox Series X prototype revealing the system’s back ports have surfaced. The images were posted by NeoGAF user CurryPanda and claimed authentic by Thurrott. The ports on the back of the prototype model include an optical audio port, two USB A ports, ethernet, power, and a single HDMI port. Xbox Series X is due out this holiday season.