All in One Computer

Brand:
Lenovo
Verify ID:
B499663
Effective Date:
October 31, 2018 - November 01, 2019
Verification Mark

Applicable To:
ThinkCentre M920q、ThinkCentre M720q

Marketing Claim Verified by UL

Anti-Dust Protection SILVER

Verification Method

This test program is developing by a new UL standard (UL 8203 - Performance Testing for Ingress of Fibrous Indoor Dust). This test is utilizing a dust chamber capable of simulating floated dust that comprises household fibrous dust and accounted 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). The measured results that resulted in providing the SILVER rating are as follows: Ingress of dust - 1.97g Performance degradation - 4% Noise increment - 4.5dB Touch temperature rise - 5.4degC

About the Manufacturer

Lenovo’s now the world No. 1 PC maker and Lenovo’s dedicated to innovate their products and differentiate their products from others.

What is UL Verification?

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