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Amazon.com: lkelyonewy 5.5 x 2.1 mm DC Power Jack Socket Threaded Female Panel Mount Connector Adapter with Dustproof Plug 6Pack : Electronics
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2/5/10Pair 5.5mm x 2.1mm DC Panel Mount Connector DC 5.5 x 2.1 DC Male Female Terminal 12V DC Power Supply Plug Socket Adapter - AliExpress
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Cables : Male to Female 2.1mm x 5.5mm Plug DC Power Adapter with 2 BNC Female Adapters CCTV CCTV-EXTENSION by www.valley-ent.com
![3.5mm / 1.1mm to 5.5mm / 2.1mm DC Jack Adapter : ID 4287 : $1.50 : Adafruit Industries, Unique & fun DIY electronics and kits 3.5mm / 1.1mm to 5.5mm / 2.1mm DC Jack Adapter : ID 4287 : $1.50 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-blog.adafruit.com/uploads/2019/07/I4287-00.jpg)
3.5mm / 1.1mm to 5.5mm / 2.1mm DC Jack Adapter : ID 4287 : $1.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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PC-2.1/5.5-14 - Plug | DC supply; female; 5.5/2.1mm; 5.5mm; 2.1mm; for cable; 14mm | TME - Electronic components
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