USB-IF Compliance Workshop #134

USB-IF Compliance Workshops are held regularly to promote USB product development. Please remember that all registrants must be USB Implementers Forum members in good standing, and be pre-registered. Please be sure to thoroughly test your products before sending your product to a Compliance Workshop.

USB-IF Compliance Workshop #134

USB-IF Compliance Workshop #134 will be held as an in-person event May 7-10, 2024  at the Embassy Suites by Hilton Portland Downtown ocated in Portland, Oregon. Registration is now open. All attendees must be USB Implementers Forum members in good standing and be pre-registered in order to attend. We will have limited availability for this workshop and only one attendee may attend with the registered product.

What’s the cost to attend the USB-IF Workshop?
Testing will be available to USB-IF members only and it is free. The USB-IF is not responsible for travel cost, shipping, or lodging. There are limited slots available for this workshop. Please complete the product registration form to be placed on the waiting list. Once your registration has been approved, we will move you from the waitlist and provide you the detailed information regarding event check-in.

What products are eligible to test at this Workshop?

For this workshop we will be testing PD 3.1 E-Markers (this includes USB4® E-Markers and those that support EPR), PD 3.1 Silicon, PD 3.1 Power Bricks, Power Banks,  Power Sinking Devices, and Shared Capacity Chargers. For a more detailed list please see the list included below.

Event Location:
Embassy Suites by Hilton Portland Downtown
319 SW Pine Street
Portland, OR 97204-2726USA
Phone: 1-503-279-9000
Registration Deadline: Sunday, April 21, 2024 (pending availability)
Hotel Room Block Deadline: Monday, April 22, 2024

Quick Links

Registration and Workshop Overview
Testing Schedule and Pretest Requirement
Room Block and Shipping Information
Confidentiality Policy
Cancellation Policy
Testing Information

Important Deadlines

Event Registration Deadline: Sunday, April 21, 2022 - (subject to availability)

Hotel Room Reservation Deadline: Monday, April 22, 2024

Registration check-in: Tuesday, May 7th 8:00am - 8:30am. Testing will be scheduled Tuesday 8:30am - 5:00pm, Wednesday - Thursday 8:00am - 5:00pm, and Friday 8:00am - 3:00pm.

Registration Form

Click Here to Register Now for the Waitlist! (USB-IF Members Only)

All registrations will be placed on a waitlist until the VIF, picture, and registration form can be reviewed. Once the registration has been approved the USB-IF will notify the registrant of its updated status.

You will receive an email confirming your registration was submitted and that you are on the waitlist. If you do not receive a message please contact

NOTE: Each registrant can only register one product for the workshop. Only complete registrations will be considered. Products on the waiting list are NOT guaranteed a testing slot.

A company may register more than one product for this workshop. However, each product must be registered by a different company representative.

Vendor Info Files are required at time of registration. Please make sure you are using the latest version located at

Registration Categories

New Testing categories at this workshop

  • Shared Capacity Chargers –  We will be testing Shared Capacity Chargers for certification at this workshop. Shared Capacity Chargers must bring a power supply and have upgradeable firmware.

  • Single Port Extendable Power Range (EPR) Power Bricks, USB PD Silicon and E-Markers (Source and DRPs) will be eligible for certification at this workshop.

  • Single and Multi-port Power Sinking Devices (including with EPR) are eligible for certification.

  • Fast Role Swap (FRS) capable products compliant with the most current USB Power Delivery 3.1 specification. Informational testing of FRS capable silicon and end-products will be available. FRS capable silicon must be provided on a development platform that allows the USB-IF to test all FRS capabilities.
  • Non Cert Vendor Hosted Suite - This registration category is for those that wish to host their own vendor suite. This is a stationary schedule only located on the testing floor. We will schedule other workshop products to your stationary suite for IOP testing.

USB Power Delivery
USB Power Delivery (PD) certification will be available for the following categories:

  • USB4 E-Markers. We will certify E-Markers that support EPR.
  • USB PD 3.1 Only Silicon with PPS (Source for cert, DRP with Source PPS for cert)
  • USB PD 3.1 Only Silicon without PPS (Source, DRP and Sink for cert)
  • USB PD 3.1 Power Brick with PPS
  • USB PD 3.1 Power Brick without PPS
  • USB PD 3.1 E-Marker (does not support Authentication). We will certify USB4 E-Markers.
  • Single and Multi-Port Power Sinking Device (includes EPR)
  • Power Banks (DRP)
  • Shared Capacity Chargers

All registrations will be placed on the waitlist. You will be notified if your product receives a testing slot. Products on the waitlist are not guaranteed a testing slot.

Please note products seeking USB certification must be using certified connectors.

NOTE: It is required that the AC Mains of all products attending USB-IF Workshops, both silicon and end-products,  be properly covered to ensure the safety of our test engineers. Any product that does not properly cover the AC Mains will not be tested.

Categories not Eligible for Certification at this Workshop

  • USB 3.1 Gen 2 and Gen 1, USB 2.0 data products and silicon (testing at test labs)
  • USB 3.1 Gen 2 Host. Hubs, and Compound Devices (testing at PIL or test lab)
  • Sink Chargers with PPS (testing at PIL and workshop for information only)
  • PD 3.1 E-Markers that support Authentication (testing at this workshop is for information only)
  • Products that support USB Authentication / Security Messages (testing at PIL for information only)
  • Multiport products with different capabilities on each port (testing at test lab)
  • Products that support FRS (testing at this workshop is for information only)

Pretest Requirement

VIFs and .jpg pictures are now required during registration. Only products with complete registration information will be considered. Please make sure you are using the latest version of the VIF generator ( located at

The USB-IF intends to test battery-powered devices with a dead battery in addition to normal testing. Bringing your product with a discharged battery (i.e. device will not turn on) is required. This is to investigate dead battery current consumption. If your product has a battery you must bring a fully charged and dead battery in order to be eligible for certification.

Room Block and Shipping Information

The USB-IF has a room block for this event. Please register for the special rate using the link here. The hotel registration cutoff date is Friday, January 12, 2024. Once the group block is filled, rooms will be available at the prevailing rate. Please note: you are responsible for organizing and requesting a late checkout directly with the hotel

When shipping to the hotel please make sure to label with hotel guest name and event dates.

Embassy Suites by Hilton Portland Downtown
319 SW Pine Street
Portland, OR 97204-2726USA
Phone: 1-503-279-9000
Event Name: USB-IF Compliance Workshop
Guest Name:
Date of Event: May 7-10, 2024

Vendor-Hosted Test Suite Form:

The purpose of this form is to get your Vendor-Hosted Test Suite placed on the correct testing floor and space appropriately to prevent testing interference.  Please fill out and submit your completed form to the USB-IF via fax at +1(503) 644-6708 or by email at by Friday, April 19th.  

  • Providing this form does NOT register you for the event. To register for CW#133 please use the registration link above.
  • Completing this form does NOT make your sleeping room reservation for your suite.  You must use the room block reservation link above.
  • You must check-in on Tuesday, May 7th from 8:00am - 8:30am. Testing will be scheduled Tuesday 8:30am - 5:00pm, Wednesday - Thursday 8:00am - 5:00pm, and Friday 8:00am - 3:00pm.

Confidentiality Policy

We remind each attendee that your company (including for its employees, consultants, or other persons acting on your company’s behalf) has already agreed and is bound to the USB-IF Policy Regarding Confidential Information. Among other things, this policy requires confidential treatment of “information learned or obtained through compliance programs or testing,” which includes your participation in the upcoming Compliance Workshop Please note that other companies may be present and that information about those companies’ activities or products should be handled with appropriate confidentiality.

Cancellation Policy

If you become unable to test at this workshop, please notify us as soon as possible by email to so your testing reservation can be released to other members with products to test.

Companies that no-show or do not cancel their testing reservation(s)  for the upcoming workshop in writing to by midnight (PT) Sunday, April 21, 2024 will not be eligible to test at the next scheduled Compliance Workshop, and subject to a $500 cancellation fee. The cancellation fee must be paid before the company will be eligible to register for future workshops. This policy will be strickly enforced.

Testing Information

USB-IF Compliance Program

Devices with captive cables must use a connector currently on the Integrators List. Devices using a detachable cable must use a cable assembly currently on the Integrators List.

For details on the tests performed see the USB-IF Compliance Program.

Interoperability testing will be on Windows 10.

Attention Members Seeking Certification for their Devices:

Compliance workshops run on a schedule and there is a limited amount of time available to test your product.  It is your responsibility to ensure that all required tests are performed on your product.  Please refer to the USB 3.2 test Matrix and USB Type-C Test Matrix.

The product must be able to be tested in the time allotted.  The USB-IF cannot guarantee that all tests can be performed on your device in the time allocated.  Compliance Workshops are certification events and are not meant for debug.There is little time, if any, for debugging so be sure to thoroughly test the device beforehand.  Any test marked “incomplete” will prevent certification.  Please be sure to ask the volunteers executing the tests for a copy of the test results and review them carefully before leaving the workshop.  The USB-IF is not responsible for missing results.

The test schedule is based on information obtained from the online device registration.  If your product is unusual (has more than one USB connector, includes an embedded host, requires special equipment to operate, etc…) please contact the USB‑IF Administration prior to the workshop to make arrangements for special handling.  The USB-IF reserves the right to require additional tests upon inspection of the device at the workshop.

Retesting is permitted by permission only pending available time.  If corrections are made to a device during the workshop, obtain a Retest Slip from the hospitality suite.  A detailed explanation of the failure and the corrections performed is needed in order to determine what compliance tests are to be performed.  There is no assurance that time will be available to retest a device.

All tests are to be performed on one device.  Exchanging a device with another during compliance testing is strictly prohibited. If a device must be replaced due to a breakdown, all tests on the broken device become void and a complete retest is required.

Debug Policy

All USB-IF authorized workshops are certification events. Workshops are not designed for debug purposes. There are instances where debug is allowed however, these sessions must be approved by the USB-IF hospitality suite before any testing begins. If any testing is performed without first consulting with the USB-IF hospitality suite it is a general policy that all data is recorded as official.

A product's admittance to the Integrator's List is based, in part, on a handful of compliance tests performed in the USB-IF suites. As time goes on and the technology matures we will add tests for problems discovered in these suites. Some tests are provided to raise awareness of potential problems in products and others are required to pass the workshop for the purposes of getting a product listed on the Integrator's List. For specific information regarding the requirements for Integrator's List qualification, see the Compliance Program Area of this site.

Products that pass the appropriate USB Implementers Forum tests will be listed on an Implementers Forum confidential "Integrators List" which a number of USB Implementers Forum companies use to make product purchase decisions.


Compliance workshop participants are responsible for their own travel, food, and hotel expenses. The USB Implementers Forum will cover all administrative costs. Lunch is provided.


If you have issues not covered by the provided information, please email