Acer M5-481TG Service Manual page 87

Figure 2-46. Write LAN MAC Address
7. To read/write mainboard serial number, do the following:
 Type in WQDMI /Rmbsn to read the mainboard serial number (Figure 2-47).
Figure 2-47. Mainboard Serial Number Menu Item
 Type in WQDMI /Wmbsn [string] to write the mainboard serial number
(Figure 2-48).
The string is a new mainboard serial number.
Example: WQDMI /Wmbsn 1234567890123456789012
Acer M5-481TG System Utilities
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