If you compare the specs on the
PRO and with the
EVO you'll notice that the PRO has:
Internal I/O Connectors:
1 x USB 3.0/2.0 connector(s) supports additional 2 USB ports (19-pin)
3 x USB 2.0/1.1 connector(s) support additional 6 USB ports
1 x MemOK! Button
4 x SATA 6.0Gb/s connectors (2 x gray; 2 x navy blue)
4 x SATA 3.0Gb/s connectors (blue)
1 x IEEE 1394a connector
1 x CPU Fan connector(s) (4-pin)
2 x Chassis Fan connector(s) (1 x 4-pin; 1 x 3-pin)
1 x Power Fan connector(s) (3-pin)
1 x TPU switch
1 x EPU switch
1 x S/PDIF Out connector
24-pin EATX Power connector
8-pin EATX 12V Power connector
Front panel audio connector
System Panel (Q-Connector)
and amongst other things the EVO has these extra:
1 x Power-on switch
1 x Reset switch
... I would just not like to end up with a system that doesn't have a power and reset button... seems rather strange to leave something like that out?