Direct OEM replacement for HCWV2, 0HCWV2, 0HXRPX, H255ES-01, AC255ES-01, PCB049 255W SFF power supplies.; Perfectly compatible with Dell Optiplex 3020 SFF, 7020 SFF, 9020 SFF small form factor desktops.; 255W max output with 100-240V auto-switching input, active PFC for global compatibility.; OEM-matched SFF size & 8Pin+4Pin connectors, plug-and-play installation for Dell motherboards.; Built-in OVP, OCP, SCP, OTP protections; fully tested for stable 24/7 business use.