System overviewThe PowerEdge R6615 system is a 1U server that supports:● One AMD EPYC 4th Generation 9004 series processor with up to 128 cores● 12 DDR5 DIMM slots, supports maximum 3 TB● Two redundant AC or DC power supply units● Up to 10 x 2.5-inch SAS/SATA/NVMe drives or 8 x 2.5-inch NVMe SSD drives or 4 x 3.5-inch SATA/SAS drives or 2 x2.5-inch (rear) SAS/SATA (HDD/SSD) drives● Up to 16 x E3.S NVMe Gen5 or 14 x E3.S NVMe Gen5 or 2 x E3.S (rear) NVMe Gen5 direct drives● PCI Express® (PCIe) 5.0 enabled expansion slots● Network interface technologies to cover Network Interface Card (NIC)● Optional Direct Liquid Cooling for required CPUs and/or configurationsNOTE: For more information about how to hot swap NVMe PCIe SSD U.2 device, see the Dell Express Flash NVMePCIe SSD User's Guide at https://www.dell.com/support > Browse all Products > Data Center Infrastructure >Storage Adapters & Controllers > Dell PowerEdge Express Flash NVMe PCIe SSD > Documentation > Manualsand Documents.NOTE: All instances of SAS, SATA drives are referred to as drives in this document, unless specified otherwise.CAUTION: Do not install GPUs, network cards, or other PCIe devices on your system that are not validatedand tested by Dell. Damage caused by unauthorized and invalidated hardware installation will null and void thesystem warranty.Topics:• Front view of the system• Rear view of the system• Inside the system• Locating the Express Service Code and Service Tag• System information label• Rail sizing and rack compatibility matrixFront view of the systemFigure 1. Front view of 4 x 3.5-inch drive systemTable 1. Features available on the 4 x 3.5-inch drive systemItem Ports, panels, andslots Icon Description1 Left control panel N/A Contains the system health, system ID, and the status LED indicator.2 Drive N/A Enables you to install drives that are supported on your system.2System overview 9