New Sunon Tubeaxial Cooling Fans, 92MM x 92MM x 38MM Thick, 48VDC / 3800 RPM, Ball Bearing, Part Number PMB4089PMB3-A (2).F.GN. Each offer quantity is for One (1) Fan. You may offer / buy any number, up to the total quantity available above.

These were purchased at an electronics wholesale company liquidation last year, and they are brand new in the original factory carton. There are three wires with a 4-position plug (3 positions populated). The datasheet says Red is (+) and Black is (-), but makes no mention of Yellow. Tachometer? Temperature? We don't really know.

According to the manufacturer:

Manufacturer: Sunon Fans

Manufacturer Product Number: PMD4809PMB3-A.(2).GN

Description: FAN AXIAL 92MM X 38MM 48VDC

Detailed Description: Fan Tubeaxial 48VDC Square - 92mm L x 92mm H Ball 91.8 CFM (2.57m³/min)

Category: Fans, Thermal Management, DC Brushless Fans (BLDC)

Series: PMD

Part Status: Active

Voltage - Rated: 48VDC

Size / Dimension: Square - 92mm L x 92mm H

Width: 38.00mm

Air Flow: 91.8 CFM (2.57m³/min)

Static Pressure: 0.430 in H2O (107.1 Pa)

Bearing Type: Ball

Fan Type: Tubeaxial

Features: Auto Restart

Noise: 50.3dB(A)

Power (Watts): 5.8 W

RPM: 3800 RPM

Current Rating (Amps): 0.120A

Material - Frame: Polybutylene Terephthalate (PBT)