led strip - USB on/off switch - Electrical Engineering Stack Exchange

I have this LED light strip which has AA Battery converter with a USB female output port. I will attach picture below. I would like to know how can I connect a SPST on/off switch to the light strip

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LED Strip Light Inline On/Off Switch Cable,4pcs Inline Switch on Off with Female Male Power Cable 5.5x2.1mm DC Connector Jack Wire Switch for CCTV LED