Naming conventions:
Product_type_h/wRevision_s/wRevision_ValidArea_language_datecode.extension
Product_Howto_language_ Theme-with-description.extension 


DES-3550_ce_en_050101.pdf			CE-Declaration.

DES-3550_ds_revALL_100_ALL_en_050101.pdf	Datasheet.
						Englisches Datenblatt.

DES-3550_man_en_UsersGuide-for-R2-2nd.pdf	Manual for DES-3550.
						Englische Anleitung für die DES-3550.

DES-3550_man_en_CLI-for-200B08.pdf		Command Line Interface Reference for DES-3526.

Dxx-3xxx_man_en_8021x_06012005.zip		Configuration Examples for DXX-3XXX.

DES_QIG_1.0_ALL_en_050802.pdf			Quick Installation Guide.

DES-3550_man_en_CLI-for-401b19_ALL_en_060819.pdf	Command Line Interface Reference

DES-3550_man_en_USER-for-401b19_ALL_en_060819.pdf	Manual english
							Anleitung englisch