Applies to: Scarlett 4i4 3rd Gen
Scarlett 4i4 3rd Gen requires 900mA of power for complete operation. All USB 3.0 and most USB 2.0 ports* are capable of providing enough current for use of the 4i4.
The Scarlett 4i4 3rd Gen audio interface is powered via the USB connection to your Mac or PC – it does not require an external power source to function.
As with all Scarlett 3rd Gen interfaces, the Scarlett 4i4 can be connected to a USB A port (using the supplied USB cable) or a USB-C port using a USB-C to USB-C cable (not supplied). The performance will remain the same regardless of which port you use.
USB type A
USB type C
The Scarlett 4i4 consumes the highest power of all the bus powered Scarlett devices, in some high power situations, such as playing headphones at a high volume, some computers may not be able to provide enough power and the 4i4 could be disconnected. If you experience this behaviour, we recommend you ensure you're using a USB port that can supply 900mA of current.
*If you are not sure whether your computer's USB 2.0 port can supply this level of current, please contact your computer's manufacturer for more information.