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4.5 mm power connector - is it two or three terminal?

Microsoft Windows 10 (32-bit)

I want to repurpose a 60W 12V to 19.5V DC-DC mobile converter previously used on a Dell LT which has a third serial comm line in their power connectors to detect non-OEM supplies. Can I simply change to a 2 circuit connector to 4.5mm and be happy?

I am upgrading the mobile fleet and need to do this times 20.

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