Yamaha DTXpress/DTXplorer/DTXtreme

How do you recording directly into 4-track DAW with DTXpress w/o using 
MIDI? I looked on the back of the DTXpress II I have and there doesn't 
appear to be a standard I/O, 1/4-inch jack or RCA outs? Is there a 
process I can use ( direct out into DAW) to capture the DTXpress sounds 
into one or more tracks on a simul-sync 4-track DAW (Fostex MR8-HD)? 
Are there ways to isolate tracks? Do a submix of the drum parts? We 
have a 5-piece band and want to start some recording and I'm trying to 
find the best way to capture drums, bass, rhythm guitar and vocals. Any 
suggestions are much appreciated!