What is the difference between Version 1 and Version 2 of GSW-1600HP?

A : Different PoE Controller Chip solution: 

      GSW-1600HP hardware version 1 : PowerDsine PD69008

      GSW-1600HP hardware version 2 : IC Plus IP808

B : Different hardware per port PoE Pin assignment:

      GSW-1600HP hardware version 1: 

     End-span 1/2 (-),3/6 (+) (odd number ports) 

     Mid-span 4/5 (+),7/8 (-) (even number ports)

     GSW-1600HP hardware version 2 : End-span 1/2 (+), 3/6 (-) on all ports.