DEEPCOOL PL550D 550W 80+ Bronze ATX 3.1 Non Modular Power Supply ( 550W )

The Deepcool PL550D is a 550W non-modular power supply built to the ATX12V V3.1 standard, making it a capable and forward-compatible choice for modern desktop PC builds. Whether you are putting together a new gaming rig or upgrading an existing system, the PL550D delivers consistent, well-regulated power backed by meaningful protections and a five-year limited warranty. At its core, the PL550D uses a dual-transistor forward topology combined with active Power Factor Correction (PFC) and DC-to-DC conversion, a design approach that contributes to stable voltage rails under varying loads. It carries the 80 PLUS Bronze efficiency certification, which means it operates at 85% or greater efficiency under a typical 50% load, reducing wasted energy as heat. A 120mm hydro-bearing fan manages thermals quietly and is rated for extended operational life. One of the standout features of the PL-D series is native ATX 3.1 compliance. This standard requires the PSU to supply twice the total system power for up to 0.1 milliseconds, handling the brief, high-intensity power excursions that modern CPUs and GPUs can produce. A native PCIe 5.1 connector rated at up to 300W is included via a 16AWG 12V-2x6 cable, providing direct support for current-generation discrete graphics cards without the need for adapters. Cabling includes three PCIe connectors and two EPS connectors alongside the 24-pin ATX and SATA/Molex connections expected of a non-modular unit. Premium electrolytic capacitors maintain a hold-up time of 16ms or greater at full load, providing resilience during brief power interruptions. The unit is rated for continuous operation between 0°C and 40°C and can function at altitudes up to 5,000 metres above sea level. Eight hardware protection circuits are built in: Over Power Protection (OPP), Over Voltage Protection (OVP), Short Circuit Protection (SCP), Over Temperature Protection (OTP), Over Current Protection (OCP), Under Voltage Protection (UVP), Surge & Inrush Protection (SIP), and No Load Operation (NLO). Verified Specifications: - Model: PL550D | P/N: R-PL550D-FC0B-IN-V2 - Rated Output: 550W - Form Factor: ATX12V V3.1 (Non-Modular) - Efficiency: ≥85% at 50% load (80 PLUS Bronze certified) - Fan: 120mm Hydro Bearing - Topology: Active PFC + DC-to-DC - Capacitors: Electrolytic - Hold-Up Time: ≥16ms at 100% load - Power Good Signal: 100–150ms - MTBF: 100,000 hours - Protections: OPP / OVP / SCP / OTP / OCP / UVP / SIP / NLO - Operating Temperature: 0–40°C - Dimensions: 150 × 140 × 86mm (W × L × H) - Certifications: CE, FCC, CCC, RCM, EAC, CAN ICES-003(B)/NMB-003(B), TUV-RH - Warranty: 5 Years (limited)