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Copper heatsink with fan and heat pipes for Lenovo Yoga 9 C940

Ruth's sister

Ruth's sister internal power cable for Lenovo Yoga 9 C940 15IRH 15IMH5 81TE 5H40S19977

SKU CH-CA7C-G4XG5

Internal power cable connects the CPU and GPU heatsink fan in compatible Lenovo Yoga 9 C940 laptops

  • Designed for Lenovo Yoga 9 C940 15IRH 15IMH5 81TE
  • Integrates CPU and GPU heatsink with fan and heat pipe
  • Replaces part number 5H40S19977 for exact fit
  • New condition ensures reliable cooling performance

Replacement internal power cable for Lenovo Yoga 9

This new internal power cable is built for the Lenovo Yoga 9 C940 15IRH and 15IMH5 models carrying the 81TE chassis code. It connects the motherboard to the CPU and GPU heatsink assembly that uses the 5H40S19977 part reference. The cable is a direct fit for the 15-inch chassis and ships in new condition.

Who this suits and who it does not

It suits repairers or owners replacing a damaged or missing power lead on the exact 15-inch Yoga 9 models listed above. Builders working on other Yoga series, different screen sizes, or machines that use a different heatsink part number should look elsewhere because the connector layout and cable length are specific to this assembly.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $96.99
Pricier than about 90% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What thermal limit does the 5H40S19977 heatsink hit first when the CPU and GPU run flat out?

The shared heat-pipe assembly saturates before either fan reaches maximum speed, so the junction temperature of the CPU and GPU becomes the limiting factor.

How much acoustic and thermal headroom remains after the 5H40S19977 cooling fan runs continuously at full load?

At sustained load the fan operates near its rated RPM, producing audible airflow noise while the heat pipes stay warm to the touch, leaving minimal margin for higher ambient temperatures.

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