Where can I find my Brother machine's serial number?

Where can I find my Brother machine

Need help identifying this sewing machine. I got it secondhand and it didn't come with any other things (such as a power cord, manual, etc). It seems to be somewhat old, at

Brother CM300 ScanNCut Craft Machine : : Everything Else

Where can I find my Brother machine's serial number?

Brother Serial Numbers Unified for all models? – To Type, Shoot Straight, and Speak the Truth…

Printer, Brother 74800N, scanner, printer, copier - PS Auction - We value the future - Largest in net auctions

Wire spark machine Brother HS-3600 - PS Auction - We value the future - Largest in net auctions

Where can I find my Brother machine's serial number?

Where can I find my Brother machine's serial number?

Canon Knowledge Base - Locate the serial number MX420

A BROTHER SEWING MACHINE model XL-3500 with 35 stitch options (bobbin plate cover missing)#57

Where can I find my Brother machine's serial number?