Laser Safety InformationCAUTION:This product may contain a CD-ROM, DVD-ROM, or laser module on a PCI card, which are class 1laser products.C30Laser ComplianceAll lasers are certified in the U.S. to conform to the requirements of DHHS 21 CFR Subchapter J for class1 laser products. Outside the U.S., they are certified to be in compliance with the IEC 825 (first edition1984) as a class 1 laser product. Consult the label on each part for laser certification numbers andapproval information.CAUTION:All IBM laser modules are designed so that there is never any human access to laser radiationabove a class 1 level during normal operation, user maintenance, or prescribed service conditions.Data processing environments can contain equipment transmitting on system links with lasermodules that operate at greater than class 1 power levels. For this reason, never look into the endof an optical fiber cable or open receptacle. Only trained service personnel should perform theinspection or repair of optical fiber cable assemblies and receptacles.C25, C26Preface xi