LENOVO YOGA 900-13ISK2 NM-A921 BIOS LISZT CYG41 CYG40 BYG40 NM-A921 NM-A921 rev 2.0 schematic NM-A921 KB_pins=30 (JKB1) PD0=20 PD1=16 PD2=14 PD3=9 PD4=13 PD5=17 PD6=10 PD7=12 BUSY=23 STB=15 AFD=26 INIT=19 SLIN=18 KSI4=22 KSI5=21
