USB A Jack to 5.5/2.1mm Barrel Jack Adapter
Adapter with a USB-A female jack on one end and a 5.5 mm OD / 2.1 mm ID center-positive barrel jack on the other, for powering barrel-jack devices from USB 5 V supplies.
Connectors
228 other optionsPassive adapters, 2.54 mm pin headers, terminal blocks, JST and barrel-jack connector pairs, RF antennas and microSD adapters. Mechanical fit between two connectors does not confirm voltage, pinout or protocol compatibility.
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Passive USB cables plus passive USB cables, Micro-B and USB-C breakouts, CP2102 and FT232 USB-UART bridges, DIY cable assembly parts, and USB-C development boards. Data support, host/device role and logic voltage vary significantly across the group.
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1.75mm PLA (1kg) - Green visual preview
1.75mm PLA (1kg) - Natural visual preview3D printing
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WS2812/SK6812 NeoPixel strips, rings and Jewels, APA102 DotStar pixels, and plain analog RGB strips — each matched to its protocol and host, not just its connector.
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