Locating the Serial Number

The serial number of your fax machine is on a label on the side or back of your fax machine.

The label will say “S/N.”

An example serial number is: 401A0154693.

Back of the Unit

1Back Cover

Open this cover to expose the expansion slot to install the

optional memory expansion board and / or

Multifunction Printer Option (MFP, also known as the PC interface).

2LINE Jack

Jack for connecting to an outside telephone line.

3TEL 1 Jack

4TEL 2 Jack

Jacks for connecting to an optional handset, external phone, or answering machine.

5AC Power Inlet

Plug the supplied AC power cord into this inlet.

34 OKIFAX 5650

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Oki 5650 manual Locating the Serial Number, Back Cover, Line Jack, TEL 1 Jack TEL 2 Jack, AC Power Inlet