^ Verily!^
Beware in general of the advertised track counts of interfaces. Many are marketed as "4 in 4 out" When in reality this means there are only 2 ANALOGUE ins and outs but they count S/PDIF. It has been known for MIDI to be counted as well in which case that AI grows to 6 in 6 out!
Then, some 2 by 2 AIs have an extra pair of line ins on the back but this does NOT mean that the unit can record 4 discrete channels. No, the line ins at the back defeat the front inputs. This can be a convenience but is confusing to the noob.
BTW the NI KA6 DOES have 4 discrete ins and outs and will record 4 tracks. MIDI and S/PDIF are not counted and are thus a bonus.
Dave.