DrivesHard drivesEight–hard-drive systems Up to eight 2.5 inch, internal, hot-swappable SAS, SATAor Nearline SAS hard drives in hard-drive slots 0through 7.Twelve–hard-drive systems Up to eight 2.5 inch, internal, hot-swappable SAS,SATA, SATA SSD or Nearline SAS hard drives in hard-drive slots 0 through 7 (hard-drive bay 1) and up to four2.5 inch Dell PowerEdge Express Flash devices (PCIeSSDs) in hard-drive slots 0 through 3 (hard-drive bay 2).Sixteen or eight plus eight–hard-drive systems Up to sixteen 2.5 inch, internal, hot-swappable SAS,SATA, SATA SSD or Nearline SAS hard drives in hard-drive slots 0 through 15 or 0 through 7 and 0 through 7.Optical drive One optional SATA DVD-ROM drive or DVD+/-RW drive.NOTE: DVD devices are data only.ConnectorsBackNIC Four 10/100/1000 Mbps or two 10/100/1000 Mbps and two100 Mbps/1 Gbps/10 GbpsSerial One 9-pin, DTE, 16550-compatibleUSB Two 4-pin, USB 2.0-compliantVideo One 15-pin VGAiDRAC7 One RJ-45 10/100/1000 Mbps EthernetFrontUSB Two 4-pin, USB 2.0-compliantVideo One 15-pin VGAExternal vFlash card vFlash memory card slotNOTE: The card slot is available for use only if theiDRAC7 Enterprise license is installed on your system.InternalUSB One 4-pin, USB 2.0-compliantInternal Dual SD Module (IDSDM) Two optional flash memory card slots with the internal SDmoduleNOTE: One card slot is dedicated for redundancy.120