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Introduction Tables 7-7, 7-8, and 7-9 list the model and part numbers for power cables that are available for use in an HPM. The power cables that are listed in tables 7-7 and 7-8 have an integral I/O Link protector module attached to the cable. The module protects the I/O Link Interface transceivers from surges when each I/O link Interface cable is routed through a protector module at the card file. The cables that are listed in Table 7-9 do not have protector modules. For the feature to be effective, all card files in the subsystem (for example, a subsystem being all the card files that are connected to the HPMM(s) through the metallic I/O Link Interface cable) must have the I/O Link protector module feature installed. New subsystems New subsystems will have this I/O Link protector module feature. If a subsystem that is without protector modules is being modified, and the I/O Link protector module feature is desired, all the existing power cables that are connected to card files can be upgraded by adding an I/O Link protector module adapter cable to the card file end of each power cable. Since there are two power cables per card file, the adapters are available in sets of two. Power cables to Power Distribution Assemblies do not require any modification (for example, the Digital Input and Galvanic Isolation Power Distribution Assemblies). The 51195479-xxx I/O Link Interface cable must always be used with the I/O Link protector module in both CE and Non-CE Compliant subsystems. Non-CE Compliant subsystems In non-CE Compliant subsystems the 51204126-xxx power cable set must be used to provide power to the card files (see Table 7-7). These power cables have the integral I/O Link protector module feature. If a system without I/O Link protector modules is being modified, and the feature is desired, all 51201397-xxx power cables must be upgraded by adding a 51204140-100 CE Compliant type I/O Link protector module adapter cable set to the card file end of each power cable set. The appropriate I/O Link Interface cables must then be used with the I/O Link protector modules. The cables are listed in Table 7-9. For the Digital Input and Galvanic Isolation Power Distribution Assemblies that are mounted inside the cabinet, use the 51201397-xxx power cable. For power distribution to Digital Input and Galvanic Isolation Power Distribution Assemblies that are located external to the cabinet, use the shielded model MU-KSPRxx power cables that are listed in Table 7-8.