Hi @noah545 ,
Thank you for reaching out!
To address your issue, please flip the mouse over and check the bottom.
There is usually a label or printed information that may include the serial number.
You can also refer to the link below for further guidance.
How to find Product Serial Number and Check Number | Official Support | ASUS Global
May we ask if the product was purchased second-hand? If it was purchased as a brand-new product from a store, please check the original packaging box of the mouse.
The serial number is typically printed on a label located on the side or bottom of the packaging.
Thank you.
