PCIe subsystem of the PowerEdgeR750

Do you know PCIe subsystem of the PowerEdgeR750?  We will introduce the details of the PCIe subsystem of the PowerEdgeR750 to you in the form of tables and pictures.The PowerEdge R750 have a no riser option. Shown below are the riser offerings for the PowerEdgeR750.

Figure 1. Riser 1A: 1 slot                                              Figure 2. Riser 1B: 2 slots                                    Figure 3. Riser 1C: 2 slots 

Figure 4. R1 Paddle (routes PCIe lanes to front backplane for additional NVMe)                Figure 5. Riser 2A: 2 Slots

Figure 6. Riser 3A: 1 Slot                                                                                                                   Figure 7. Riser 3B: 2 Slots

Figure 8. R3 Paddle (routes PCIe lanes to front backplane for additional NVMe)        Figure 9. Riser 4A: 1 Slot

Figure 10. Riser 4B: 2 Slots