Verify ID:


Expiration date:

September 19, 2023 - September 18, 2024

Verification Mark

Applicable To:

ThinkCentre M90a Pro Gen4

Marketing Claim Verified by UL Solutions

Anti-Dust Protection BRONZE

Verification Method

The product is assessed per UL 8203 - Performance Testing for Ingress of Fibrous Indoor Dust. This test is utilizes a dust chamber capable of simulating floated dust comprised of household fibrous dust and accounts for one year of dust accumulation (i.e., 2 kg). After the test, the following measurements are carried out: (1) ingress of dust (mg), (2) performance degradation (%), (3) noise increment (dB), and (4) touch temperature rise (°C).

What is UL Verification?

UL Verification is an objective, science-based assessment that confirms the accuracy of marketing claims. Our independent assessment process scrutinizes the validity of specific advertising or promotional statements, giving you a way to separate verified fact from fiction.