bfg ls-550 power supplyBFG LS-550 power supply is part of BFG’s LS Series which features a typical efficiency of up to 85% so more power is converted to DC than many other power supplies on the market.
BFG Thermal Control Technology ensures that the unit runs as quietly as possible by varying the speed of the fan in response to load and temperature.
Single +12V rail, over-volt, over-current and short circuit protection provides rock solid reliability and safety.
LS550 power supply works with AGP, PCI, PCI Express®, includes two PCI Express Connectors for Dual Graphics Card Support and features new 8-Pin PCI Express Connector.

LS-550 BFG power supply specifications

  • ATX12V 2.2
  • Single 12V Rail
  • SATA Connectors
  • PCI Express Ready
  • Efficiency: > 80% Typical
  • Silent 135mm Intake Fan
  • BFG Thermal Control Technology
  • Protection Circuitry
  • MTBF: > 100,000 Hours at 25°C
  • 550W Continuous Rated at 40°C
  • Dimensions: 8.6cm W x 15cm H x 16cm D (3.4″ W x 6″ H x 6.4″ D)

BFG power supply DC Output

  • +3.3V = 24A
  • +5V = 24A
  • +3.3V +5V Combined Load Wattage = 140W
  • +12V = 42A
  • -12V = 0.3A
  • +5Vsb = 2.5A

LS-550 Box content

  • 1 x 550 Watt Power Supply Unit
  • 1 x US Power Cable
  • 1 x User’s Guide
  • 4 x Mounting Screws

BFG LS550 Connectors

  • 1 x 24-Pin (20+4-Pin) Motherboard Connector
  • 1 x 8-Pin (4+4-Pin) CPU 12V Power Connector
  • 1 x 6-Pin PCI Express Connector
  • 1 x 8-Pin PCI Express Connector
  • 6 x Peripheral Connectors
  • 1 x 4-Pin Floppy Connector
  • 6 x SATA Connectors

BFG LS550 features

  • ATX12V 2.2 – Supports the latest Intel and AMD based platforms requiring 24-pin motherboard and 4-pin or 8-pin 12V connectors. The 20+4-pin motherboard connector also ensures backwards compatibility with previous ATX standards
  • PCI Express® Ready – The PCI Express power connectors ensure compatibility with many high-end and several dual graphics card configurations without having to use unreliable, often performance hindering adapters
  • SATA Connectors – Six serial ATA connectors allow you to connect up to six serial ATA devices without needing special adapters
  • BFG Thermal Control Technology – During regular operation, the fan slows down to reduce unnecessary noise
  • High Efficiency – While most computer power supplies pinnacle at 80% efficiency, the BFG LS Series is typically 80% to 85% efficient, which means more power drawn from the outlet is converted to DC power for your computer than many of the other units on the market

BFG LS 550 power supply photo gallery