An optional device that was just installed does not work. Check the IMM event log for any events associated with the device. Make sure that:The device is installed in the correct port. The device is designed for the server (see the Lenovo ServerProven website ). You followed the installation instructions that came with the device and the device is installed correctly. You have not loosened any other installed devices or cables. You updated the configuration information in the Setup utility. Whenever memory or any other device is changed, you must update the configuration. Reseat the device that you just installed. Replace the device that you just installed. An optional device that worked previously does not work now. Check the IMM event log for any events associated with the device. Make sure that all of the cable connections for the device are secure. If the device comes with test instructions, use those instructions to test the device. If the failing device is a SCSI device, make sure that:The cables for all external SCSI devices are connected correctly. The last device in each SCSI chain, or the end of the SCSI cable, is terminated correctly. Any external SCSI device is turned on. You must turn on an external SCSI device before you turn on the server. Reseat the failing device. Replace the failing device. PCIe adapters not recognized/functioning Check the IMM event log and resolve any errors related to the device. Make sure that the adapter is on the server proven list for the Machine Type (see the Lenovo ServerProven website ). Make sure that you have the adapter installed in the correct slot. Make sure that the correct device drivers are installed on your operation system for the device. Resolve any resource conflicts if running legacy mode (UEFI). Check for service bulletins for help with this. Make sure that any adapter external connections are correct and not physically damaged.