Factory Direct 20V 21A 420W Desktop Power Adapter with Active PFC and Optional DC Connectors | Guangdong QINX

The Guangdong QINX 20V 21A 420W desktop power adapter is engineered to deliver a regulated 20V DC output at 21A, supplying 420W of continuous power for high-load applications. Utilizing an advanced switching power architecture, it provides outstanding voltage regulation, minimal output ripple, fast dynamic response, and stable operation to ensure reliable performance for sophisticated electronic equipment.

To optimize efficiency in high-power applications, this model integrates active Power Factor Correction (PFC) technology. The active PFC circuit improves input power quality, minimizes harmonic distortion, enhances overall energy efficiency, and supports compliance with modern energy-saving requirements, making it suitable for industrial and commercial installations operating around the clock.

The adapter supports a universal 100-240VAC, 50/60Hz input, enabling a single product platform for worldwide markets. Guangdong QINX offers complete OEM and ODM manufacturing capabilities, including customized DC plugs, output cables, wire gauges, enclosure colors, logo printing, product labeling, packaging, and application-specific electrical configurations. Every unit undergoes comprehensive functional, aging, dielectric, and full-load testing before shipment to ensure consistent quality and long-term reliability.

Applications

• Industrial AI computing platforms
• Machine vision and image processing systems
• Automated production line controllers
• High-performance industrial PCs
• Network storage and enterprise servers
• Semiconductor testing equipment
• Intelligent transportation control systems
• Professional broadcasting and signal processing equipment

Connector Options

Optional connector solutions include 5.5×2.5mm, 5.5×2.1mm, 6.5×4.4mm, Kycon locking DC connectors, GX16, GX20, GX25 aviation connectors, M12 circular connectors, Anderson SB50/SB120 connectors, XT60, XT90, EC5 connectors, Molex Mini-Fit Jr., Hirose connectors, JST connectors, Phoenix terminal blocks, as well as fully customized cable harnesses and connector assemblies according to customer drawings.

Safety Design

Designed with comprehensive protection functions including Over Voltage Protection (OVP), Over Current Protection (OCP), Over Load Protection (OLP), Short Circuit Protection (SCP), Over Temperature Protection (OTP) and active PFC technology, ensuring safe, efficient, and reliable power delivery during continuous high-power operation.

Certifications

Available with UL, cUL, CE, FCC, RoHS, UKCA, PSE, SAA, CB, and DOE Level VI certifications to meet global safety, EMC, and energy efficiency requirements for international OEM projects.