UL60950-1 s0-7629-1238-3 Information Technology Equipment -Safety Part 1 General Requirements L . LSTED CLASSIFIED ING MARCH 27,2007-u60950-1 Underwriters Laboratories Inc .( UL) 333 Pfingsten Road Northbrook .IL 60062-2096 UL Standard for Safety for Information Technology Equipment -Safety -Part 1 :General Requirements , UL60950-1 Second Edition ,Dated March 27 .2007 Summary of Topics This is the second edition of the bi-national Standard and is based on 60950-1 .second edition . UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language ( SGML).SGML - an international standard ( ISO8879-1986 )--is a descriptive markup language that describes a document's structure and purpose ,rather than its physical appearance on a page .Due to formatting differences resulting from the use of UL's new electronic publishing system ,please note that additional pages ( onwhich requirements have been changed )may be included in revision pages due to relocation of existing text and reformatting of the Standard The new and /orrevised requirements are substantially in accordance with UL's Proposal (s)on this subject dated October 27 ,2006 and Fe...