280W DT Desktop Power Supply Replacement PSU L280P-01 H280P-01 Compatible with Dell OptiPlex GX520 GX620 740DT 745 C520 C521 Desktop Computer

This 280W ATX desktop switching power supply is a premium replacement unit built for Dell OptiPlex series desktop PCs. It directly replaces OEM power supply models L280P-01 and H280P-01, fully matching original electrical parameters, size and interface standards. The power supply works seamlessly with OptiPlex C521, GX620, GX520, 745 and 740DT tower chassis.

With mature switching circuit design, it delivers low-ripple stable voltage output to satisfy daily office work, document editing and basic multimedia usage. The internal wiring layout is consistent with the original power supply, enabling quick plug-and-play installation without cutting cables or adding adapters.

Multiple built-in safety protection mechanisms cover overvoltage protection, overcurrent protection, overload protection and short-circuit protection. The power supply automatically shuts down output when circuit abnormalities occur, avoiding burnout of motherboard, hard drives and other core hardware.

Every finished power supply undergoes long-duration full-load aging inspection and comprehensive function testing before packaging. High-quality electronic components support reliable long-hour continuous operation. It is a cost-effective maintenance spare part suitable for enterprise office equipment renewal, school computer maintenance and computer repair shops.