Note: If any adapters in the server are large or have heavy cables attached tothem, you can remove the rear adapter-retention bracket and secure all of theadapters with expansion-slot screws (the expansion-slot screws are located onthe side of the optical drive cage).AdapterRear adapterretention bracketFront adapterretention bracket10. Connect required cables to the adapter. Route cables so that they do not blockthe flow of air from the fans.11. Rotate the rear adapter-retention bracket to the closed (locked) position.12. Rotate the front adapter-retention bracket to the closed (locked) position.If you have other options to install or remove, do so now; otherwise, go to“Completing the installation” on page 68.Installing a microprocessorThe following notes describe the type of microprocessor that the server supportsand other information that you must consider when installing a microprocessor:v The server comes with one microprocessor installed, but supports up to twomicroprocessors.Note: A microprocessor must be installed and removed only by a trained servicetechnician.v Read the documentation that comes with the microprocessor to determinewhether you have to update the basis input/output system (BIOS) code. Todownload the most current level of BIOS code for your server, go tohttp://www.ibm.com/support/, and click Downloads and drivers.v When you install a second microprocessor, you must also install the voltageregulator module (VRM), which comes with the microprocessor option kit, in theVRM connector on the system board.v Some models support dual-core microprocessors or quad-core microprocessors.Do not mix dual-core microprocessors and quad-core microprocessors in thesame system. Install all dual-core or all quad-core microprocessors in the server.v To ensure that the server operates correctly, use microprocessors that have thesame cache and type, and the same clock speed. The microprocessor internaland external clock frequencies must be identical. You can use the48 System x3400 Types 7973, 7974, 7975, and 7976: User’s Guide
