CX2550/60/70 M4 Upgrade and Maintenance Manual  
5.2.2 Verifying system information backup / restore .  .  .  .  .  .  .  .  .  .   83
5.2.3 Updating expansion card firmware   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   83
5.2.4 Enabling Option ROM scan  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   85
5.2.5 Resetting the boot retry counter .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   86
5.2.5.1 Viewing the boot retry counter  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   86
5.2.5.2 Resetting the boot retry counter  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   86
5.2.6 Enabling SVOM boot watchdog functionality   .  .  .  .  .  .  .  .  .  .   88
5.2.7 Enabling replaced components in the BIOS .  .  .  .  .  .  .  .  .  .  .   89
5.2.8 Reconfiguring the backup software solution .  .  .  .  .  .  .  .  .  .  .   90
5.2.9 Verifying the memory mode  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   90
5.2.10 Verifying the system time settings .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   92
5.2.11 Viewing and clearing the System Event Log (SEL)  .  .  .  .  .  .  .   93
5.2.11.1 Viewing the SEL  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   93
5.2.11.2 Clearing the SEL .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   94
5.2.12 Updating the NIC configuration file in a Linux and VMware 
environment  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   94
5.2.13 Resuming BitLocker functionality   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   96
5.2.14 Performing a RAID array rebuild .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   97
5.2.15 Looking up changed MAC/WWN addresses   .  .  .  .  .  .  .  .  .  .   97
5.2.15.1 Looking up MAC addresses  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   98
5.2.15.2 Looking up WWN addresses .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   98
5.2.16 Using the Chassis ID Prom Tool .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .   99
5.2.17 Configuring LAN teaming   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 100
5.2.17.1 After replacing/upgrading LAN controllers  .  .  .  .  .  .  .  .  .  . 100
5.2.17.2 After replacing a system board .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 100
5.2.18 Switching off the ID indicator   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 101
5.2.19 Performing a fan test   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 101
5.2.20 Resetting the error status after replacing CPUs .  .  .  .  .  .  .  .  . 103
5.2.20.1 CPUs .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 103
5.2.21 Updating ServerView RAID Manager  .  .  .  .  .  .  .  .  .  .  .  .  .  . 104
6 Expansion cards and OCP mezzanine cards .  .  .  .  .  .  .  .  . 105
6.1 Basic information   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 106
6.1.1 CX2550 M4   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 106
6.1.2 CX2560 M4 / CX2570 M4  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 110
6.2 Expansion cards in the riser module  .  .  .  .  .  .  .  .  .  .  .  .  . 118
6.2.1 Installing expansion cards  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 119
6.2.1.1 Preliminary steps .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 119
6.2.1.2 Mounting a controller to the riser module   .  .  .  .  .  .  .  .  .  . 120
6.2.1.3 Connecting cables to the expansion card   .  .  .  .  .  .  .  .  .  . 121