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Small black 40 mm USB fan with Nidec branding

TSUJ

TSUJ Kepler-C72J-OYS-0064 4010 5V USB fan

SKU CH-Z8G8-AV3Y2

A 40 mm USB-powered fan with a Nidec ultra-silent motor for targeted cooling

  • Key featuresU40 × 05ML27-51 Nidec 4cm4 PCT Ultra Silent Fan 4010 5 V USB
  • Ultra-silent operation from Nidec motor
  • 5 V USB power for easy connectivity
  • 4010 form factor fits compact spaces
  • PCT bearing ensures smooth, long-lasting rotation

4010 5V USB fan for compact cooling

The TSUJ Kepler-C72J-OYS-0064 is a 4010-size fan powered by a standard 5 V USB connection. It uses a Nidec U40X05ML27-51 motor rated for ultra-silent operation. The 4 cm frame fits tight spaces such as small enclosures, router vents or laptop coolers.

Replaces louder 4010 fans or passive heatsinks

Swapping a noisy 4010 unit for this model cuts audible turbulence while keeping the same mounting holes. The upgrade is worth it when the existing fan whines at low speed or when a passively cooled device throttles under load.

How it compares

Measured against everything we stock in Pedestal, Table & PC Fans, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 90% of the 302 comparable items (median $31.99).

Specifications

Product
Brand nameTSUJ
Part numberKepler-C72J-OYS-0064

Questions about this item

What size opening does the 4010 fan need for mounting?

The 4010 frame fits a standard 40 mm square cut-out with four corner screw holes spaced for that size.

How do you connect the USB power lead without damaging the header?

Align the USB-A plug with the port, press straight in until seated, and route the cable so the 5 V line cannot be pinched or bent sharply.

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