Max. power supply and motor output in Motor Shield V2.0 ?

Dear all,

Motor Shield V2.0 uses Dual Full-Bridge Drive Chip L29398. From its data sheet, the operating supply voltage is up to 46VDC, 4A.
However, the Wiki page indicates that the motor power supply is 6 - 15VDC, 2A.

Please specify the max. voltage and current for external power supply and motor output, respectively!