Customers can judge the compatibility of the device when they can't measure and compare:
5.5mm x 2.1mm is usually used for low watts, such as surveillance cameras, some set-top boxes, led table lamps, digital appliances, etc.
5.5mm x 2.5mm is usually used for relatively large watts, such as notebook computers, electric appliances, etc.
Please ask detailed and specific
questions about Pricing, Minimum Order Quantity, Delivery Timelines etc. Detailed Messages
result in prompt responses.