Power Supply Dell 870W VT6G4-RFB ATX 12V – 870W single-unit ATX 12V PSU for Dell systems

The Dell Power Supply 870W VT6G4-RFB is an internal ATX 12V power supply unit designed for compatible Dell systems. Rated at 870 watts, this single-unit PSU provides stable power delivery for desktops, workstations and small servers that accept the ATX 12V standard and the form factor used by Dell. The model VT6G4-RFB is intended as a direct replacement for failed units or as an upgrade when higher power capacity is required to support additional components or heavier workloads.

Advantages

This Dell 870W ATX 12V power supply offers a clear rated power capacity of 870 watts and follows standard ATX 12V connections for compatibility with supported Dell motherboards and systems. The unit is manufactured to Dell's specifications and uses the original MPN VT6G4-RFB and EAN 5711045935374 for correct identification. Its design focuses on stable voltage delivery and reliable operation under sustained load, reducing the likelihood of system instability due to insufficient power.

Suitable for

• Replacing a failed ATX 12V power supply in compatible Dell desktops, workstations or small rack systems
• Upgrading system power capacity to support additional drives, PCIe cards or higher-core-count processors
• Maintaining stable power delivery in environments where the Dell VT6G4-RFB form factor is required

Key specifications

• Brand: Dell
• Model / MPN: VT6G4-RFB
• EAN: 5711045935374
• Rated output: 870W
• Form factor / standard: ATX 12V (internal PSU)

How to use

Before installation, power off the system and disconnect it from mains power. Open the chassis following the manufacturer's service manual and note the existing cable routing and connector positions. Remove the failed PSU and install the Dell VT6G4-RFB in the same orientation, securing it with the original mounting screws. Connect all ATX 12V and peripheral connectors to the motherboard, drives and other components according to their labeled ports. Verify all connections are secure, then close the chassis, reconnect mains power and perform a system power-on test to confirm normal operation.

Usage recommendations

Verify compatibility with your specific Dell system model and service manual before purchasing. Confirm that the chassis supports the VT6G4-RFB form factor and that the system's cooling, connector layout and power requirements match the 870W rating. Use a grounded workspace and follow ESD precautions during installation. If the system exhibits instability after replacement, recheck connections and consult Dell support or a qualified technician.