1, Where to download the XP-420B Printer driver ？
Official website :
2 , How to XP-420B Printer WIFI setting ?
3,How to setting 420B Ethernet interface printer ?
4,420B printer red light alarm when printing , how to solve it ?
5, when run Diagnostic tool , can't run it , how to sove it .
download the new version Diagnostic tool (1.028version or 1.029version)
Add: Building A, Huabiao Plaza, No. 601 Tianhe North Road, Tianhe District, Guangzhou,Guangdong province,China