![AOpen AX4SG-U Online Manual Download Page 122](http://html.mh-extra.com/html/aopen/ax4sg-u/ax4sg-u_online-manual_2950954122.webp)
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The Part Number and Serial number are printed on bar code label. You can find this bar code label on the outside packing, or on
component side of PCB. For example:
P/N: 91.88110.201
is part number,
S/N: 91949378KN73
is serial number.
Part No.
Serial No.