DellPowerEdge R510 Technical Guide 55Table 22. Riser 2 Slot InformationBandwidth Slot Location Height LengthSlot1 (Gen2) PCIe x16 PCIe x16 Full Height Half LengthSlot2 (Gen2) PCIe x4 PCIe x8 For dedicated storage controller• One x16 PCIe Gen2 slot(slot 1, x16 connector with x16 routing) for full-height full-length cards, andconnected to the IOH• One x4 PCIe Gen2 slot(slot 2, x8 connector with x4 routing) for dedicated storage controller card, andconnected to the IOH• System supports 25W maximum power for the slot 1 and 15W for slot 2• The lower power support on slot 2 is due to system thermal limitations instead of system powerrequirements• The PowerEdge R510 does not support hot-swapping of PCIe cards10.2.1 PCI Device information• IOH port 1, 2 (PCI Express Gen2 x4) – Broadcom BCM5716 Gigabit LOM• IOH port 3 (PCI Express Gen2 x4) – Slot 2• IOH port 7/8/9/10 (PCI Express Gen2 x16) – Slot 110.2.2 Boot Order for Riser 2Boot order for Riser 2 is as follows: IOH port 1, 2 (PCI Express Gen2 x4) – Broadcom BCM5716 Gigabit LOM IOH port 3 (PCI Express Gen2 x4) – Slot 2 IOH port 7/8/9/10 (PCI Express Gen2 x16) – Slot 110.2.3 PCI Card DimensionsTable 23. PCI Card Dimensions: Riser 2Offered through Customer Kit only.Slot Location Bandwidth Physical Slot Height LengthSlot1 (Gen2) PCIe x16 PCIe x16 Full Height Half LengthSlot2 (Gen2) PCIe x4 PCIe x8 For dedicated storage controller