Innovation First, Inc. 1UCMA-137 1U Cable Management Arm 19" 28.5"-33" computer accessory
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ProTechTrader
A 30-watt universal AC/DC adapter with reversible polarity, eight interchangeable tips and a built-in USB port for 3–12 V devices
The ProTechTrader VPOW312-30W is a 30 watt universal AC DC power adapter supplying 3 to 12 volts at up to 2.5 amps. It includes a USB port rated for 1.0 amp charging and eight interchangeable DC tips covering 5.5mm, 5.0mm, 4.0mm, 3.5mm and 2.35mm barrel sizes. The reversible polarity design allows centre-positive or centre-negative operation by flipping the tip.
This adapter suits routers, speakers, monitors, cameras and similar electronics that require 3, 4.5, 5, 6, 9 or 12 volts within the 12 watt limit per voltage. Buyers needing more than 2.5 amps total output or a USB port delivering above 1.0 amp should look at a higher-capacity supply instead.
The single specification that decides compatibility is the reversible polarity tip system combined with the eight included barrel sizes. You must match your device's exact jack dimensions and required centre polarity before purchasing.
| Brand | ProTechTrader |
|---|---|
| Model | 30w Universal AC DC Power Adapter |
| Part Number | VPOW312-30W |
| Color | Black |
| Dimensions | 3.0 in x 2.0 in x 1.0 in |
| Weight | 3.5 ounces |
The adapter has a US 120 volt plug for standard North American wall outlets.
Yes, a 5.5 mm × 2.1 mm tip is included and the reversible polarity lets you match center-positive or center-negative devices.
The USB port supplies up to 1.0 amp; if your device begins charging, the port is working as intended.
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