USB Test Overview

GRL offers deep USB expertise and works especially closely with the USB silicon ecosystem.

Cables and Connectors (A, C), Peripherals (devices), Hubs, Systems (Hosts), Power Delivery Chargers, and Silicon:

  • USB 3.2 & 2.0 Electricals
  • USB 3.2 & 2.0 CV/Functional
  • USB 3.2 & 2.0 & Interoperability and Backwards Compatibility
  • USB 3.2 Link Layer
  • USB 3.2 Protocol Stress Testing Tools & Services

USB Pre-Compliance test services are also available.

Login to register your product for USB certification testing here


USB interface overview

Universal Serial Bus (USB) came out in 1996. It has become the most common transmission interface in current technology products. It can be found in desktops, laptops, monitors, and various electronic products. In response to market demand, the transmission speed has been gradually increased, making it the most widely used interface on the market.


The USB Implementers Forum (USB-IF) Association is a non-profit organization, co-founded by Apple, HP Inc., Intel Corporation, Microsoft Corporation, Renesas Electronics, STMicroelectronics, Texas Instruments and other companies, and is committed to the specification of Universal Serial Bus technology , The unification of the certification process, and the technical promotion of this interface. For more information about USB-IF, you can refer to the official website of USB-IF .


USB latest version specification

Universal Serial Bus 4 Specification – August, 2019

Certification area

  • Type and examples of products that can be USB certified
    • Host
    • Peripheral
    • Hub
    • Compound Device
    • Embedded Host
    • Cable/Connector
    • Power Delivery


GRL’s latest USB Power Delivery and USB Type-C® Test Solutions 



Technical Tools Zone



USB, USB-C®, USB Type-C® and USB-IF are registered trademarks of USB Implementers Forum
This information is provided for reference only. This information is not and should not be regarded as an official communication of the USB Implementers Forum (USB-IF). The official communication of USB-IF can be obtained from its website or directly from USB-IF.