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Jex Electronics LLC > Connectors & Adapters > Female 2.5mm to Male 2.1mm DC Power Plug Connector Adapter Size Changer
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5.5 2.5 mm DC Power 5.5 x 2.5mm Male Plug to 5.5 2.1 mm DC 5.5 x 2.1mm Female Jack Adapter Connector - AliExpress
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Amazon.com: Coax Barrel Plug Adapter from 2.5mm to 2.1mm Power Plug by Creative Lighting Solutions LLC : Electronics
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Amazon.com: 1pcs New 2.5mm x 0.7mm Male Plug to 5.5mm x 2.1mm female socket DC Power Adapter : Electronics
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Amazon.com: DC Power Converter Plug, HTTX (5.5mm x 2.1mm to 3.5mm x 1.35mm) Tip Size AC/DC Adapter Barrel Plug Connector for Wall Chargers (10-Pack) : Electronics
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