IBM TS4300 User Manual page 215

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Table 55. Minimum firmware levels for common library features (continued)
Feature
Library Serial Number 7800K0K or greater
Key Path Diagnostics (KPD)
Minimum Firmware Levels Required
Library firmware must be at 1.2.1.0-A00 or greater
to support newer library serial numbers.
Library Firmware must be at 1.3.0.0-A00 or greater
to support KPD.
Appendix A. Minimum firmware levels for common library features 183