Lenovo 5b21f65786 Mobile Planar Board Rtx 3060

Product Description

The LENOVO 5b21f65786 is a mobile planar board designed as a core system component for Lenovo laptop and mobile workstation platforms. The planar board serves as the main logic board, integrating the processor, graphics, and memory subsystems into a single replaceable assembly. Based on the part number encoding, this board pairs an Intel Core i7-6800H series processor with an NVIDIA RTX 3060 discrete GPU carrying 6 GB of dedicated video memory and 6 GB of system RAM onboard. It is serviced by authorized technicians performing depot-level or advanced field repairs on compatible Lenovo mobile systems.

This planar board is intended for component-level repair scenarios where the existing board has failed due to GPU fault, processor failure, power delivery issues, or physical damage. Installation requires disassembly of the full chassis and is not a field-swappable part under normal circumstances. It is suited for authorized Lenovo service centers and experienced depot repair technicians working on the applicable mobile platform.

Key Features

• Integrated Intel Core i7-6800H series processor and NVIDIA RTX 3060 GPU on a single mobile planar assembly
• 6 GB dedicated RTX 3060 graphics memory for compute and display workloads
• 6 GB onboard system RAM included as part of the planar assembly
• OEM Lenovo replacement part ensuring compatibility with original firmware and thermal design
• Designed for depot-level or authorized service repair workflows

Compatibility

Designed as an OEM replacement planar board for compatible Lenovo mobile systems. Consult the Lenovo parts lookup tool or service documentation using part number 5b21f65786 to confirm fitment for a specific model before ordering.

Installation Notes

Planar board replacement must be performed by a qualified technician with experience in mobile system depot repair. Power down the system completely, disconnect the battery, and discharge any residual voltage before beginning disassembly. Follow Lenovo hardware maintenance manual procedures for the specific chassis to avoid damage to flex cables, antenna leads, and thermal interface components. Reinstallation typically requires fresh thermal interface material on all processor and GPU contact surfaces.

Technical Specifications

• GPU: NVIDIA RTX 3060 6 GB
• Onboard RAM: 6 GB
• Processor Series: Intel Core i7-6800H
• Form Factor: Mobile Planar Board

Standard Information

• Brand: LENOVO
• Manufacturer Part Number: 5b21f65786