Yamaha DTXpress/DTXplorer/DTXtreme

Hi,

Anyone using TO HOST connection to a computer?...Using midi better? 
Same?

I just started experimenting using midi with my Cubase based 
computer DAW. 

My Aardvark Q10 audio card has a midi In/out & I'm now 
plugging/unplugging my Keyboard & DTX when I want to record either 
one with midi...

I just remembered the DTX has a TO HOST connection which if I'm 
correct is similar/same to midi.

If I can use the TO HOST with the DTXpress to my Cubase computer, 
then using my midi IN/OUT at my sound card, then I won't have to do 
a switch.

Also if I'm correct the TO HOST is a TWO WAY connection with one 
cord & with midi I need to used two cables. 
But what I'm NOT understanding here is the concept of not using my 
sound card as a way of connection to the DTXpress?

And also, where do I get this TO HOST connector/cable?

Clue me in here?

Thanks, Steve