How many octo fan controllers can be used in one computer? i would like to use two of these for two separate loops.

I see no reasons why you couldn’t use as many as you have motherboard usb slots available. The software seems set up to show each device individually already.

This os able to hook up to motherboard via usb 2.0?

You use the motherboard's USB headers. Each header allows for a single 4-pin/5-pin USB connection. The OCTO comes with that cable so you typically don't need anything else. You may need to get a splitter like "Splitty" if you don't have enough headers on the motherboard and still want to utilize your case's front USB ports. Just remember that the bandwidth is shared across all the devices coming out of that header.

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Description

🎮 Elevate your PC’s cool factor with precision and style!

POWERFUL FLEXIBLE - Each channel delivers up to 25W (100W combined) with full on/off control for ultimate efficiency.
SEAMLESS INTEGRATION - USB 2.0 and aquabus interface compatibility with aquasuite software for effortless setup and monitoring.
SMART THERMAL AWARENESS - Four dedicated temperature sensor inputs ensure your rig stays cool under pressure.
PRECISION COOLING MASTERY - Control up to 8 PWM fans with 0.1% resolution for whisper-quiet, optimized airflow.
VIBRANT RGB CUSTOMIZATION - 180 individually addressable RGBpx LEDs plus two RGBpx outputs for stunning, personalized lighting.

The Aquacomputer OCTO Fan Controller is a compact, high-performance 8-channel PWM fan controller designed for both air and water-cooled PCs. It supports up to 25W per channel (100W total), features four temperature sensor inputs, and controls 180 addressable RGBpx LEDs for customizable lighting effects. With USB 2.0 connectivity and aquasuite software integration, it offers precise fan speed management and real-time thermal monitoring, making it a must-have for enthusiasts seeking optimal cooling and aesthetic control.

Specifications

Brand	Aquacomputer
Manufacturer	Aquacomputer
Country of Origin	USA
Model number	53286
Colour	Black
Item Weight	91 g
Product Dimensions	7.7 x 4.9 x 1.6 cm; 91 g
Item model number	53286
Item Height	16 Millimeters
Item Width	49 Millimeters
Cooling type	Air, Water
Type of connector	4-Pin
Voltage	12 Volts
Wattage	100 Watts
Compatible Device	Desktop
Are batteries included?	No