Testdriver is the cloud-based part of the service. The client is a small app that you install on each system you wish to test.

Testdriver uses HTTPS (SSL) encryption to communicate with the client and the database.

Testdriver and the client app



  • 443 — Both URLs use the same port for requests


  • If the user is running PCMark10 or Procyon with Testdriver Cloud the client required administrative rights.
  • If the user is running only CPU Health Test and/or Storage Health Test the client can be installed without administrative rights.

       (See UL Benchmarks How to add a PC system for testing for more details)

TLS Cipher

TLSv1.2 and TLSv1.3 are allowed, older versions are not approved.

The server is using a certificate supplied by UL that has a trust chain based on Entrust Inc root certificate.

Entrust Root Certification Authority - G2
-> Entrust Certification Authority - L1K
      -> testdriver.ul.com