2. Installation and Connection
Express5800/R310e-E4, R320e-E4, R320e-M4, R310f-E4, R320f-E4, R320f-M4 User's Guide
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Chapter 2 Preparations
13. Slowly and carefully insert the CPU/IO module 0 into the chassis.
14. Close the levers on the top and the bottom, and then secure the CPU/IO module with screws.
15. Install the CPU/IO module 1 to the chassis with the same procedures.