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Black rectangular AC adapter with 4.5 by 3.0 mm barrel connector and power cord

usbroway

usbroway 90W AC Adapter 4.5*3.0mm Dell OptiPlex Micro 2023

SKU CH-1A7G-Q2MDY

90W AC adapter with 4.5×3.0mm tip powers Dell OptiPlex Micro desktops from 2023 across 3020 to 9020 series

  • Battery TypeLithium-Ion
  • Delivers up to 90W via 4.5*3.0 mm tip for fast charging
  • Replaces Dell part numbers including 450-18919 and LA45NM140
  • 2023 upgraded design supports 45W, 65W and 90W requirements
  • CE, FCC and RoHS certified with over-voltage and short-circuit protection
  • Compatible with OptiPlex Micro 9020, 7040, 7050, 7060, 7070, 7080 and more

90W AC Adapter for Dell OptiPlex Micro

This 90W AC adapter supplies 19.5V at up to 4.62A through a 4.5*3.0mm barrel tip. It replaces Dell part numbers including CC0DT, X9RG3, CDF57 and 312-1307. The unit is compatible with OptiPlex Micro models such as the 9020, 7050, 5050, 3020 and 7700 T.

Thermals noise and power draw

The adapter delivers up to 90W and also supports 45W and 65W loads at the same voltage. It includes over-voltage protection and short-circuit protection to limit heat build-up during sustained use. CE, FCC and RoHS certifications confirm compliance with recognised safety standards.

Build fit and what it frees

The 4.5*3.0mm tip fits the dedicated power jack on listed OptiPlex Micro desktops without an adapter. One brick covers 45W, 65W and 90W original units, reducing the number of spare chargers needed. Buyers who need a different connector size or a higher wattage rating cannot use this model.

Highlights

  • Delivers up to 90W via 4.5*3.0 mm tip for fast charging
  • Replaces Dell part numbers including 450-18919 and LA45NM140
  • 2023 upgraded design supports 45W, 65W and 90W requirements
  • CE, FCC and RoHS certified with over-voltage and short-circuit protection
  • Compatible with OptiPlex Micro 9020, 7040, 7050, 7060, 7070, 7080 and more

Specifications

Battery TypeLithium-Ion

Questions about this item

How do I connect the 4.5*3.0mm tip to my Dell OptiPlex Micro, and what step do people get wrong?

Align the 4.5 mm outer and 3.0 mm inner dimensions with the DC jack, then push straight in until the connector seats fully; the common error is inserting at an angle, which can bend the centre pin and prevent charging.

What maintenance or replacement will this adapter need later?

The unit has no user-serviceable parts; if the cable frays, the tip loosens, or output drops below 19.5 V at 4.62 A, replace the entire adapter.

What limit appears first when the adapter runs at 90 W continuously?

Sustained 90 W output triggers the built-in over-voltage and short-circuit protection, which will shut the unit down until it cools.

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