I'm looking at buying a Powertap with a yellow hub cover. It is advertised as a new wireless SL+. Based on the 2.4 head I am assuming it is actually an older model SL 2.4 which could be upgrated to support ANT+. My only concern is I haven't seen any recent models with a yellow hub cover. Can anyone identify the model shown below? I've asked the seller but he is selling for someone else and doesn't have all the details.