Brother HL-S7000DN Product Safety Manual page 12

To ensure safe operation, the supplied three-pin plug must be inserted only into a standard
three-pin electrical socket that is properly earthed through the standard electrical wiring.
Use only the power cord supplied with this product.
DO NOT place this product in a position where the cord is stretched or strain is otherwise put
on the cord. Doing so may cause the cord to become worn or frayed.
Unplug this product from the electrical socket before you move the product.
DO NOT use the product if the power cord is frayed or damaged. Doing so may cause an
electrical shock or a fire.
Brother strongly recommends that you DO NOT use any extension cord.
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