https://www.expertreviews.co.uk/technology/monitors/benq-gl2450-review
BenQ GL2450 review | Expert Reviews
Aug 30, 2014 - The GL2450 is a basic monitor, but it provides accurate colours but lacks style and HDMI inputs
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https://www.service-manual.pro/?download=56229-benq-gl2450-gl2450hm-gl2450ht-gl2450m-gl2450tc-service-manual
BenQ GL2450, GL2450HM, GL2450HT, GL2450M, GL2450TC Service Manual
benqservicemanual