I'm replacing the power adapter for my Lantronix device server or Evaluation/Demo board.  What is the size and polarity of the barrel connector for these products?

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There are three sizes of barrel connectors that are used on Lantronix products that are powered by external power supply (with the exception of the Lantronix Spider that is powered via Auxiliary PSU with mini-USB 'B' connector). The different sizes are based on whether the external power supply is 3.3V, 5V, or 12V to prevent accidentally connecting the wrong power supply to the device.

3.3 Vdc power supply units have a 3.5mm OD x 1.35mm ID barrel connector.

5Vdc power supply units have a 5.5mm OD x 2.5mm ID barrel connector.

12Vdc power supply units have a 5.5mm OD x 2.1mm barrel connector.

All connectors are center pin positive with the barrel negative.

Voltage varies by product. For power supply voltage see the User or Installation Guide for your product, available from
http://www.lantronix.com/support/documentation.html or
http://www.lantronix.com/support/documentation.html

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[Originally Published On: 06/26/2001 07:11 PM]