NNL
NNL 40mm Powerful Cooling Fan
Status: NNL DBTB0428B2G 40mm Powerful Cooling Fan for…: Unavailable on Amazon as of . SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.
Bottom line: The NNL 40mm Powerful Cooling Fan is a specs-and-price decision rather than a crowd-consensus one in the cooling & fans category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.
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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:
Similar: AFB0612VHC 6cm 60mm Fan 6015 12V 0.36A Ball… — $8.98 on Amazon as of 2026-10-06 16:17 UTC (price may vary).
Similar: GDSTIME 40mm Fan 3-Pin 12V 40x40x10mm Mini… — $9.48 on Amazon as of 2026-10-06 10:24 UTC (price may vary).
Similar: GDSTIME 2Pcs 80mm x 25mm Dual Ball Bearings High… — $18.74 on Amazon as of 2026-10-07 04:32 UTC (price may vary).
Pros & Cons
Pros
- ✓ Model: DBTB0428B2G
- ✓ Backed by NNL's warranty and support channels
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
Manufacturer description
Bearing: high precision double ball bearing Model: DBTB0428B2G Dimensions: 40 x 40 x 28mm side length 4cm thickness 2.8cm Rated voltage: 12V Current: 1.0A high speed violent large air volume fan Interface: 4 wires (25cm) Speed: 18000 RPM full speed Air volume: 19.4cfm Additional functions: PWM intelligent temperature control and speed measu
SpecPicks Verdict
SpecPicks scored NNL 40mm Powerful Cooling Fan using a rating × review-volume × price-fit model applied to published specs and reviews across the cooling & fans category. NNL's cooling & fans lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for cooling & fans of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Model: DBTB0428B2G
- Bearing: high precision double ball bearing
- Current: 1.0A high speed violent large air volume fan
- Dimensions: 40 x 40 x 28mm side length 4cm thickness 2.8cm
- Additional functions: PWM intelligent temperature control and speed measu
Full Specifications
| Brand | NNL |
|---|---|
| Model | NNL-128 |
| Weight | 2g |
| Bearing | high precision double ball bearing |
| Current | 1.0A high speed violent large air volume fan |
| Voltage | 12 Volts |
| Wattage | 3 watts |
| Material | Copper |
| Dimensions | 40 x 40 x 28mm side length 4cm thickness 2.8cm |
| Unit Count | 1.0 Count |
| Noise Level | 25 Decibels |
| Part Number | NNL-128 |
| Material Type | Copper |
| Cooling Method | Air |
| Number of Items | 1 |
| Air Flow Capacity | 19.4 Cubic Feet Per Minute |
| Compatible Devices | Server |
| Additional functions | PWM intelligent temperature control and speed measu |
| Power Connector Type | 4-Pin |
| Maximum Rotational Speed | 18000 RPM |
| Full listing title | NNL DBTB0428B2G 40mm Powerful Cooling Fan for AVC 4028 12V 1A High Speed Server Fans 40 * 40 * 28mm Dual Ball Bearing 4-Wire 4Pin PWM |
Ready to buy?
Amazon shows no buyable offer for NNL DBTB0428B2G 40mm Powerful Cooling Fan for… at the last check. A similar in-stock product is AFB0612VHC 6cm 60mm Fan 6015 12V 0.36A Ball…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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