Welcome to AmRunJe, your go-to brand for innovative mini cooling fans.
We specialize in AC, EC, and DC series fans designed for DIY enthusiasts looking for efficient cooling and exhaust solutions. Our fans are easy to install, and they feature an energy-efficient design along with CE and ROHS certifications for safety.
Experience the perfect blend of quality and versatility with AmRunJe, where your ideal cooling solution comes to life.
Blower Fan
120mm x 25mm Computer Fan
USB FAN
80mm-120mm exhaust fan
5v USB blower fan
Waterproof Fan
110v AC Metal Corner Fans
12V 2pin&3pin Fan
12v 4pin Fan
24v 3d printer fan
220V EC Cooling Fan
Speed Control Fan
5V USB Cooling Fan
From 40mm to powerful 140mm models, find the perfect mini cooling fan for any project. Our 40mm USB fan leads the lineup as the ultimate DIY cooling fan for electronics, terrariums, and enclosed spaces. Whether you need a PC case fan, Ender 3 fan, or Xbox Series S cooling fan, we have the right size
40mm USB fan with variable speed
This 40mm Mini Fan with Speed Control offers 3 adjustable settings (High/Medium/Low) to customize airflow and noise levels. Perfect as a mini computer fan or a Terrarium fan. The on/off switch makes it ideal for Helmet fan and Fursuit fan applications where precise cooling management is essential.
40mm USB pwered computer fan
Our 40mm USB cooling fan connects directly to any USB port - laptop, router, power bank, or console. This fan automatically powers on/off with your device, providing smart cooling for network NAS mini PC setups. The versatile micro fan works seamlessly as both a Reptile fan for vivariums.
Micro DIY usb fan for desk
Measuring just 40×40×10mm, this miniature fan slips into tight spaces where regular fans can't fit. The mini USB fan is perfect for cooling camera gear, mobile devices, and cramped electronics. This small computer fan delivers maximum airflow in minimum space, making it for confined installations.
Tiny USB box fan with brushless motor
This 40mm USB fan integrates a brushless motor with durable, lightweight plastic. The safety metal grill prevents debris intrusion and protects from accidental contact. An ideal, reliable DIY cooling fan for long-term use.
mini usb fan applications
Versatile cooling for every need: Terrarium, cabinet, modem, NAS, Mini PC, Xbox, or Raspberry Pi. This compact 40mm USB cooling fan delivers targeted airflow wherever your electronics need it most.
USB 5V FAN SERIES
 40mm x 10mm 2PCS |  60mm x 15mm 2PCS |  80mm x 25mm 2PCS |  120mm x 25mm 2PCS |  140mm x 25mm 1PCS | |
|---|---|---|---|---|---|
Customer Reviews | — | — | — | — | — |
Price | — | — | — | — | — |
Rated Voltage | 5V | 5V | 5V | 5V | 5V |
Airflow | 6.12 ±10% CFM | 14.3 ±10% CFM | 39 ±10% CFM | 77 ±10% CFM | 63 ±10% CFM |
Noise | 25 dBA | 25 dBA | 27 dBA | 32 dBA | 28 dBA |
Speed | 5500 RPM | 3500 RPM | 2500 RPM | 2000 RPM | 1400 RPM |
Bearing | Sleeve | Sleeve | Sleeve | Sleeve | Sleeve |
5V USB Cooling Fan
From 40mm to powerful 140mm models, find the perfect mini cooling fan for any project. Our 40mm USB fan leads the lineup as the ultimate DIY cooling fan for electronics, terrariums, and enclosed spaces. Whether you need a PC case fan, Ender 3 fan, or Xbox Series S cooling fan, we have the right size
40mm USB fan with variable speed
This 40mm Mini Fan with Speed Control offers 3 adjustable settings (High/Medium/Low) to customize airflow and noise levels. Perfect as a mini computer fan or a Terrarium fan. The on/off switch makes it ideal for Helmet fan and Fursuit fan applications where precise cooling management is essential.
40mm USB pwered computer fan
Our 40mm USB cooling fan connects directly to any USB port - laptop, router, power bank, or console. This fan automatically powers on/off with your device, providing smart cooling for network NAS mini PC setups. The versatile micro fan works seamlessly as both a Reptile fan for vivariums.
Micro DIY usb fan for desk
Measuring just 40×40×10mm, this miniature fan slips into tight spaces where regular fans can't fit. The mini USB fan is perfect for cooling camera gear, mobile devices, and cramped electronics. This small computer fan delivers maximum airflow in minimum space, making it for confined installations.
Tiny USB box fan with brushless motor
This 40mm USB fan integrates a brushless motor with durable, lightweight plastic. The safety metal grill prevents debris intrusion and protects from accidental contact. An ideal, reliable DIY cooling fan for long-term use.
mini usb fan applications
Versatile cooling for every need: Terrarium, cabinet, modem, NAS, Mini PC, Xbox, or Raspberry Pi. This compact 40mm USB cooling fan delivers targeted airflow wherever your electronics need it most.
USB 5V FAN SERIES
40mm x 10mm 2PCS | 60mm x 15mm 2PCS | 80mm x 25mm 2PCS | 120mm x 25mm 2PCS | 140mm x 25mm 1PCS |
|---|---|---|---|---|
| Customer Reviews | ||||
| — | — | — | — | — |
| Price | ||||
| — | — | — | — | — |
| Rated Voltage | ||||
| 5V | 5V | 5V | 5V | 5V |
| Airflow | ||||
| 6.12 ±10% CFM | 14.3 ±10% CFM | 39 ±10% CFM | 77 ±10% CFM | 63 ±10% CFM |
| Noise | ||||
| 25 dBA | 25 dBA | 27 dBA | 32 dBA | 28 dBA |
| Speed | ||||
| 5500 RPM | 3500 RPM | 2500 RPM | 2000 RPM | 1400 RPM |
| Bearing | ||||
| Sleeve | Sleeve | Sleeve | Sleeve | Sleeve |
Welcome to AmRunJe, your go-to brand for innovative mini cooling fans.
We specialize in AC, EC, and DC series fans designed for DIY enthusiasts looking for efficient cooling and exhaust solutions. Our fans are easy to install, and they feature an energy-efficient design along with CE and ROHS certifications for safety.
Experience the perfect blend of quality and versatility with AmRunJe, where your ideal cooling solution comes to life.
Blower Fan
120mm x 25mm Computer Fan
USB FAN
80mm-120mm exhaust fan
5v USB blower fan
Waterproof Fan
110v AC Metal Corner Fans
12V 2pin&3pin Fan
12v 4pin Fan
24v 3d printer fan
220V EC Cooling Fan
Speed Control Fan
