Soldering Station Yihua 936 or 936B

Anyone know the difference between these two? One (936B) has on/off switch on the front and 2 LEDs, the other (936) has switch on the side and 1 LED.

http://www.ebay.com/itm/New-2in1-AC-110V-YiHUA-936B-Rework-Soldering-Station-50W-Solder-Soldering-Iron-/401008462914?hash=item5d5df78c42

http://www.ebay.com/itm/YiHua-936-110-V-45W-ESD-Rework-Soldering-Station-Solder-Iron-Handle-Iron-Tips-/311362367381?hash=item487ea4af95

Same seller account, but both ship from North Brunswick (T-Mart??)

I’ve got the 936. I don’t think there is much of an actual difference between them. I did see that the B has 50w vs the 45w