19V 3A 57W Desktop Power Adapter | OEM Power Supply Factory Manufacturer

The 57W 19V 3A desktop power adapter from Guangdong QINX is designed for medium-power electronic devices that require stable voltage output, efficient energy conversion, and dependable long-term operation. Built with advanced switching power technology, this adapter delivers smooth DC power with reduced ripple and strong load adaptability.

With a universal AC input range of 100-240V, the adapter supports global usage without additional voltage converters. Its regulated 19V DC output ensures consistent performance for devices that demand stable power, while its energy-efficient design meets DOE Level VI requirements for modern external power supplies.

Guangdong QINX provides a wide selection of DC output connector options to support different device interfaces. Available choices include 5.5×2.1mm, 5.5×2.5mm, 4.5×3.0mm, 4.0×1.7mm, 3.5×1.35mm barrel connectors, USB-style outputs, right-angle plugs, and open-wire leads. Customized connector solutions can also be developed for OEM and ODM projects.

To ensure safe and stable operation, the adapter integrates multiple protection features including over-voltage protection, over-current protection, overload protection, short-circuit protection, and thermal protection. Guangdong QINX also supports full customization services such as branding, cable length adjustment, connector selection, housing design, and packaging solutions.

Typical Applications                    

• Network routers and communication devices
• CCTV surveillance systems
• Set-top boxes and media players
• LED lighting control systems
• Audio and multimedia equipment
• Smart home devices
• Industrial control modules
• Small office electronics
• Consumer electronic accessories
• Testing and measurement devices