PoweredUSB

PoweredUSB

PoweredUSB is a proprietary interface standard that combines both power and data transfer capabilities. It was developed by the USB Implementers Forum (USB-IF) as an extension to the Universal Serial Bus (USB) standard. PoweredUSB allows devices to draw power directly from the USB connection, eliminating the need for separate power adapters.

History

PoweredUSB was first introduced in 2004 as a response to the increasing power requirements of certain devices, such as point-of-sale systems, kiosks, and industrial equipment. These devices often required more power than the standard USB specification could provide, leading to the development of PoweredUSB.

Technical Specifications

PoweredUSB is based on the USB 2.0 standard and utilizes a 4-pin connector. It provides both power and data transfer capabilities, allowing devices to be powered and communicate with the host system through a single cable. The standard supports a maximum power delivery of up to 24 watts, which is significantly higher than the 2.5 watts provided by a standard USB 2.0 port.

The PoweredUSB connector consists of four pins: two for power (12V and ground) and two for data transfer (D+ and D-). The power pins are capable of delivering higher currents, enabling devices with higher power requirements to operate without the need for an external power source.

Advantages

PoweredUSB offers several advantages over traditional USB connections:

1. **Power Delivery**: The ability to deliver higher power allows devices to operate without the need for separate power adapters, reducing clutter and simplifying installation.

2. **Data Transfer**: PoweredUSB provides the same data transfer capabilities as standard USB, allowing devices to communicate with the host system.

3. **Compatibility**: PoweredUSB is backward compatible with standard USB devices, meaning that PoweredUSB ports can also be used to connect regular USB devices.

4. **Reliability**: The higher power delivery of PoweredUSB ensures a stable power supply, reducing the risk of power-related issues and device failures.

Applications

PoweredUSB is commonly used in various industries and applications, including:

1. **Point-of-Sale Systems**: PoweredUSB is widely used in retail environments for connecting peripherals such as barcode scanners, receipt printers, and cash drawers.

2. **Kiosks**: Many self-service kiosks, such as those found in airports, shopping malls, and ticketing systems, utilize PoweredUSB to power and connect various devices.

3. **Industrial Equipment**: PoweredUSB is often used in industrial settings to connect and power devices such as sensors, controllers, and data acquisition systems.

4. **Gaming**: Some gaming peripherals, such as controllers and steering wheels, utilize PoweredUSB for both power and data transfer.

Conclusion

PoweredUSB provides a convenient solution for devices that require both power and data transfer capabilities. Its ability to deliver higher power and maintain compatibility with standard USB devices makes it a popular choice in various industries. With its advantages in power delivery, data transfer, compatibility, and reliability, PoweredUSB continues to be a reliable and efficient interface standard for a wide range of applications.

See Also

• Universal Serial Bus
• USB 2.0
• Point-of-Sale Systems
• Kiosks
• Industrial Equipment
• Gaming

References

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