All in One Computer

Brand:
LENOVO (BEIJING) LTD
Verify ID:
A410499
Effective Date:
May 20, 2020 - May 19, 2021
Verification Mark

Applicable To:
ThinkCentre M838z

Marketing Claim Verified by UL

Anti-Dust Protection SILVER PLUS

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 PLUS rating are as follows: Ingress of dust - 1.03 g Performance degradation - 2% Noise increment - 0 dB Touch temperature rise - 1 degC

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.