Part number 91VRM
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SAS Cable Dell PowerEdge R660/R6525/R6625 10x2.5" SFF-8654 STR 8i CTRL_SRC_SB1 for SFF-8654 STR 4i BP_DST_SB1
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The LED codes on the R660 motherboard can signal various issues, such as a 5V switch fault or problems with connected USB devices, iDRAC cables, or the rear I/O card. To troubleshoot, perform a flea power drain, clear the NVRAM, and test with only the minimum components necessary for POST. If the server still does not boot, further inspection of the components may be required. [community thread]
To disable the liquid cooling setting, you can use an undocumented OEM IPMI command with ipmitool. Ensure you have root/admin privileges, and after executing the command, reboot both the iDRAC and the host operating system to apply the changes. [community thread]
No, the H755 SAS controller is not compatible with NVMe drives, even if the backplane supports them. You will need to use a dedicated NVMe controller for this configuration. [community thread]
To troubleshoot random reboots, check for any error messages around the time of the reboots and ensure that all firmware and software are updated. Run diagnostics using Dell SupportAssist, reseat hardware components like memory and CPUs, and monitor temperatures to prevent overheating. Additionally, verify the power supply and consider testing with a different one if issues persist. [community thread]