Hi Peter6,
The PIXMA MG2120 only has a USB connection method; so we can better assist you, please let us know when you are being prompted for a connection/security code when using the printer. Please also include what operating system you have (version of Windows or Mac OS X) in your reply.
For more immedate assistance, please call 1-866-261-9362, Monday - Friday 10:00 a.m. - 10:00 p.m. ET (excluding holidays) and a Canon technical support representative will be happy to help. There is no charge for this call.
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