DellDell PowerEdge R910 Technical Guide 39ICH10SATAOn Planarvia chipsetInternalSATAOptical(No HDD)Yes—1 portfor Optical — — — x1 int — —LSI2032SCSILSI 2032AdapterExternalSCSI TapeorExternallegacySCSIstorageYes—Max 2 PCIe slot x4 Yes SCSI(ext) — —12.7 LED IndicatorsEach disk drive carrier has two LED indicators visible from the front of the system. One is a green LEDfor disk activity and the other is a bicolor (green/amber) LED for status information. The activity LEDis driven by the disk drive during normal operation. The bicolor LED is controlled by the storageenclosure processor (SEP) device on the backplane. Both LEDs are used to indicate certain conditionsunder direction of a storage controller.For more information, see the Hard-Drive Indicator Patterns section in the About Your Systemchapter in the Dell PowerEdge R910 Systems Hardware Owner’s Manual onSupport.Dell.com/Manuals.12.8 Optical DrivesSATA optical drives are optional in all R910 systems and connect to the planar via the SATA interfaceto ICH10. IDE (PATA) optical drives are not supported.The following internal optical drives are available on R910: DVD-ROM and DVD+RW.If the optical drive is not ordered with the system, a blank is installed in its place.