Confirming USB Port Power Rating
- Updated2025-04-28
- 2 minute(s) read
Before installing the USB-6453 or USB-6453 (OEM), confirm how much power the USB port to which you plan to connect provides.
The following table lists the power provided by the different types of USB ports and the level of functionality each type supports.
USB Port Type | Typical Power Provided | Supported Functionality |
---|---|---|
Type A, USB 2.0 | 2.5 W | Not supported |
Type A, USB 3.0+ | 4.5 W | Supported with limited functionality |
Type C, USB 2.0 | 2.5 W | Not supported |
Type C, USB 3.0+, default 4.5 W power only | 4.5 W | Supported with limited functionality |
Type C, USB 3.0+, supporting 7.5 W or more | 7.5 W | Supported with full functionality |
Check the documentation for your computer or hub to determine if a USB Type-C
port provides at least 7.5 W or more of power.
Generally, any port advertised with any of the following features should be
able to provide 7.5 W of power.
- Thunderbolt support
- USB4 support
- Dual lane support (for example, USB 3.2 Gen1x2, where "x2" indicates dual lane support)
- USB Power Delivery support
If you are using the USB-6453 or USB-6453 (OEM) on a port that only provides 4.5 W of power, you can configure the USB-6453 or USB-6453 (OEM) to consume less power. The following table provides a few example configurations that limit power consumption to be less than the minimum power provided.
Configuration | AI Maximum Rate | AO Maximum Load Per Channel | DO and +5 V Combined Maximum Load |
---|---|---|---|
Only using AI | 500 kS/s | 0 mA | 0 mA |
Using all I/O | 250 kS/s | 0.25 mA | 50 mA |
Not using AI | 0 kS/s | 2 mA | 50 mA |