embroidery machine board main card servo driver Detailed Product Descriptionsupply all type dahao computer cards:(1):322 ... ),ms21(stepping motor driver),EF119(Needle position card),E871/E874(coiling signal transfer card) etc(4):dahao main card/main board: E9101B,E950 ... ,E808,E850,E860,E866,E870,E901.(5):dahao power supply board:E9102,6BPB ...