[TenTec] (Orion) firmware update with serial port-less computer

[George]

I just bought a new mother board at Dayton. I knew that it did not have any 
COM ports. I need 4 com ports to run my hamshack, O2, rotor, packet, etc. 
What is the best way to get 4 com ports, board or 4 individual USB to com 
converters? If I go with the individual converters I'll need a USB expansion 
board.
Suggestions?
Thanks.
George  W2YJ