Naming conventions: Product_type_h/wRevision_s/wRevision_ValidArea_language_datecode.extension Product_Howto_language_ Theme-with-description.extension DWL-ab520_ce_en_050101.pdf CE Declaration. DWL-ab520_man_en_021114.pdf Manual for DWL-AB520. Englische Anleitung für die DWL-AB520. DWL-ab520_qig_en_040708.pdf Quick-Install-Guide for DWL-AB520.