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Black fully modular ATX power supply with rotatable AC inlet and USB hub

Lian Li

Lian Li RS1200G.BH 1200 W ATX 3.1 power supply

SKU CH-J81B-DEWPE MPN RS1200G.BH

Fully modular ATX 3.1 unit delivers 1200 W with a rotatable AC inlet, dual-sided 24-pin output, USB 2.0 hub and 12V-2x6 cable rated for 600 W

  • ColorBlack
  • TypeATX (ATX 3.1 Compatible)
  • Maximum Power1200 W
  • Fans1 x 135 mm FDB Fan
  • PFCActivePFC, PF > 0.90 underfull load@ 115Vac, 60Hz
  • ModularFull Modular

Options ATX 3.1 80+ Gold (1200W w/ Hub) Black

  • Rotatable AC inlet simplifies cable routing in standard and back-connect builds
  • Fully modular design with soft flat cables and magnetic ties eases cable management
  • 135 mm FDB fan with fanless mode keeps noise low at light loads
  • Cybenetics Platinum and 80 Plus Gold certifications confirm high efficiency
  • 12V-2x6 600 W cable with robust terminals supports PCIe 5.1 graphics cards

Power and topology

The Lian Li RS1200G.BH is a fully modular ATX 3.1 power supply rated for 1200 W. It meets 80 Plus Gold, Cybenetics Platinum and PPLP Gold efficiency standards with active PFC above .90 at 115 V input.

Builds that benefit and those that will not

This unit suits high-end desktop systems that need PCIe 5.1 and 12V-2×6 600 W GPU power with clean cable routing via the rotatable AC inlet and dual-sided 24-pin output. Builders who do not require 1200 W or the new connector standard should look at smaller, less complex units.

Capacity headroom

The 1200 W rating comfortably handles multi-GPU configurations and overclocked CPUs while the 135 mm FDB fan runs in a fanless mode at low load. Headroom diminishes only when sustained draw approaches the maximum rated output.

Highlights

  • Rotatable AC inlet simplifies cable routing in standard and back-connect builds
  • Fully modular design with soft flat cables and magnetic ties eases cable management
  • 135 mm FDB fan with fanless mode keeps noise low at light loads
  • Cybenetics Platinum and 80 Plus Gold certifications confirm high efficiency
  • 12V-2x6 600 W cable with robust terminals supports PCIe 5.1 graphics cards

Specifications

BrandLIAN LI
SeriesRS series
ColorBlack
TypeATX (ATX 3.1 Compatible)
Maximum Power1200 W
Fans1 x 135 mm FDB Fan
PFCActivePFC, PF > 0.90 underfull load@ 115Vac, 60Hz
ModularFull Modular
Energy-Efficient80 Plus Gold / CybeneticsGold / PPLP Gold
ProtectionOCP/OVP/OTP/OPP/SCP/UVP/NLP/SIP
Input Voltage100 - 240 V
Input Frequency Range50/60 Hz
Connectors24/20-Pin motherboardconnector(620mm) * 1pc
8 PinCPU/ATX 12V connector(700mm) * 1pc
4+4 PinCPU/ATX 12V connector(700mm) * 1pc
6+2 PinGPU connector(650mm+100mm) * 1pc
6+2 PinGPU connector(650mm) * 3pcs
12V-2X6 600W connector(650mm) * 1pc
SATA connector(300+15+15+15mm) * 1pc
SATA-Y connector(375+150mm) * 1pc
SATA connector(400+150+150+150mm) * 1pc
PATA connector(500+150+150+150mm) * 1pc
USB 9pin-9pin(470mm)* 1pc
USB 9pin-TypeA(550mm)* 1pc
Dimensions12.80" x 8.19" x 5.12"
Weight6.26 lbs
Shipping weight3.63 kg
Package size330 × 224 × 140 mm

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Questions about this item

Which motherboard power connectors are required for this PSU to function?

The PSU includes a 24/20-pin motherboard connector at 620 mm, an 8-pin CPU/ATX 12V connector at 700 mm and a 4+4-pin CPU/ATX 12V connector at 700 mm.

Can I keep my existing SATA-powered drives and peripherals with this unit?

Yes, the included RS Hub is powered via a SATA cable and provides a USB 2.0 hub with magnetic attachments for easy integration.

How do I verify the 12V-2x6 cable is delivering power correctly after installation?

The 12V-2x6 cable uses dual-colour housing and robust terminals; confirm the GPU receives power and the 135 mm FDB fan spins under load.

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