5H40S19962 - Dual CPU Cooling Fan Assembly for Yoga C740-15 C740-15IML 81TD

5V dual-blower CPU cooling fan assembly for compatible Yoga C740-15 and C740-15IML 15.6-inch convertible laptops using machine type 81TD and the 5H40S19962 / DFS1507053H0T cooling layout. This replacement assembly includes both brushless blower fans, the joined metal housing, two four-wire cables, and two 4-pin motherboard connectors. The heatsink, heat pipes, mounting screws, and thermal paste are not included unless specifically shown.

Technical Specifications

• Primary Part Number: 5H40S19962
• Fan Model Number: DFS1507053H0T
• Fan Revision / Suffix: FLMU
• Brand: Unbranded or Third Party Brand
• Part Type: Internal laptop CPU cooling fan assembly
• Fan Configuration: Complete dual-fan assembly with two blower motors
• Fan Design: Low-profile centrifugal / radial blowers
• Motor Type: Brushless DC
• Rated Voltage: 5V DC per fan
• Rated Current: 0.5A per fan
• Calculated Input Power: 2.5W per fan based on the labeled voltage and current
• Connector Count: 2
• Connector Type: Two 4-pin motherboard fan connectors
• Cable Configuration: Two separate four-wire fan cables
• Housing Design: Joined metal fan shroud with integrated mounting tabs
• Compatible Screen Size: 15.6-inch platform
• Compatible Machine Type: 81TD
• Installation Type: Internal screw-mounted fan assembly
• Included Component: Dual cooling fan assembly shown
• Not Included: Heatsink, heat pipes, mounting screws, thermal paste, or other hardware unless shown

Interchangeable / Replacement Part Numbers

5H40S19962, DFS1507053H0T

FLMU is the revision / suffix used with DFS1507053H0T and should not be treated as a separate interchangeable part number. The 5H40S19962 service reference may identify the complete thermal module with fan in parts catalogs; this listing includes only the dual-fan assembly shown and does not include the heatsink or heat pipes.

⭐ Recommended Thermal Paste

If the heatsink or heat-pipe assembly must be loosened, lifted, or removed during installation, use Shin-Etsu G751 High Performance Thermal Grease for CPU and GPU Applications.

Thermal paste is not normally required when replacing only the fan assembly while leaving the heatsink fully seated. If the heatsink is disturbed, completely clean away the old compound and apply fresh thermal paste before reassembly.

✅ Confirmed Compatibility

Please note that the following list is not exhaustive. Compatibility depends on the exact cooling configuration installed in the laptop. Verify the original 5H40S19962 or DFS1507053H0T reference, 15.6-inch chassis, machine type, dual-fan housing, mounting tabs, cable routing, and both 4-pin connectors before installation.

✔️ Yoga C740 15.6-Inch Models: Yoga C740-15, Yoga C740-15IML
✔️ Machine Type: 81TD configurations originally equipped with the 5H40S19962 / DFS1507053H0T dual-fan cooling assembly
✔️ Confirmed North American Product Numbers: 81TD0003US, 81TD0005US, 81TD0007US, 81TD0008US, 81TD001YUS
✔️ Documented Regional Product Examples: 81TD000ATX, 81TD000GCK, 81TD000XPH, 81TD003YGE, 81TD0040GE, 81TD005FMH, 81TD006NMH
✔️ Documented Processor Configurations: Core i5-10210U, Core i7-10510U, Core i7-10710U systems using the matching 81TD thermal-module and dual-fan layout

☑️ Key Features

☑️ Complete two-fan replacement assembly for compatible 15.6-inch C740 systems
☑️ Two low-profile centrifugal blowers in a joined housing
☑️ 5V DC 0.5A rating on each fan motor
☑️ Two separate four-wire cables with 4-pin motherboard connectors
☑️ Unbranded replacement for 5H40S19962 and DFS1507053H0T cooling configurations
☑️ Fan-only replacement that allows reuse of a serviceable original heatsink and heat-pipe assembly
☑️ Helps correct grinding, rattling, excessive fan noise, intermittent operation, fan errors, and seized cooling fans
☑️ Direct-fit design when the original housing, mounting tabs, cables, connectors, and blower outlets match

⚙️ Fit Notes

• Match 5H40S19962 or DFS1507053H0T whenever possible
• Where present, confirm the complete DFS1507053H0T FLMU fan-label reference
• Confirm the laptop is the 15.6-inch C740-15 / C740-15IML machine type 81TD platform
• This listing includes the complete dual-fan assembly shown, not a single loose fan
• The 5H40S19962 service number may be cataloged as a complete thermal module with fan; the heatsink and heat pipes are not included in this listing
• Do not confuse this assembly with 5H40S19963, DFS2001054A0T, or AT1FG001VV0, which correspond to the different 14-inch cooling layout and are not interchangeable
• Compare the joined fan housing, both blower sizes, mounting tabs, screw-hole positions, and both exhaust outlets with the original assembly
• Verify that the original assembly uses two separate four-wire cables and two matching 4-pin motherboard connectors
• Confirm both connector shapes, wire order, cable lengths, cable exit positions, and routing paths before ordering
• Reuse the original mounting screws unless screws are specifically shown or stated as included
• Clean dust from both blower intakes, the heatsink fins, and the exhaust openings during installation
• Fresh thermal paste is required if the heatsink or heat-pipe assembly is loosened, lifted, or removed
• Disconnect the AC adapter and internal battery before servicing the cooling system
• Use ESD precautions and disconnect each fan plug by its connector rather than pulling on the wires