Help me to choose right board, please.

[makes]

Sorry, I don't exactly know where place such topic. I need a board with :
- Linux
- 2 serial (really RS-485)
- LAN
- Real Time Clock
- SD-CARD
- ability to connect MOD-IO

better to have 4 DAC also...

Is it all possiable on OLinuXino base in one device?