Pity Roland have only seen fit to give the XV3080 and XV88 2 slots for SRX boards!!!! They've committed the same blunder that Korg did with their Triton keyboard- only give it 2 slots for expansion. Geez are these manufacturers out of their minds????? Do they expect us to turn our boards around/unscrew our racks each time we want to change boards- far out brussel sprout!!!!