EMU-0404 Multi track synch

EMU-0404 Multi track synch

I’m lookin to buy an EMU-0404 USB so I can record vocals and synch my sorry to say
Ensonic ks-32. When I try to record a second track using the built -in sound card there is a huge lag. Question: will adding this device enbale me to recourd multi tracks in real time?

TIA.