2U rackmount computer with the Core i / Xeon CPU and ATX motherboard, 1 x 3.5" & 4 x 5.25" open HD bay, 1 x 3.5" hidden drive bay, and 2 x front USB ports.
RMC7215A:
2U Rackmount computer, 10th generation processor, 8GB memory, 1TB 3.5" SATA hard drive, 4 x 5.25" open drive bay, 7 x PCI/PCIe expansion slots, 300W 2U power supply.
RMC7215B:
2U Rackmount computer, E5-2600 V4 Xeon CPUs, 16GB ECC memory, 500GB SATA hard drive, 4 x 5.25" open drive bay, 7 x PCI/PCIe expansion slots, 600W 2U power supply.
RMC7215C:
2U Rackmount computer, Dual / Quad Core CPU Socket 1150, 4GB memory, 500GB SATA hard drive, 4 x 5.25" open drive bay, DVD optical drive, 7 x PCI/PCIe expansion slots, 300W 2U power supply.