Table 1. Specifications (7X69 and 7X70) (continued)
Expansion slots Fifteen expansion slots 
•  Slot 1 - 2: PCI Express 3.0 for 4U PCIe riser card with the following slots available 
depending on the riser card installed in slot 3:  
–  ThinkSystem SR860 2x8 PCIe FH riser 2 provides: 
–  Slot 1: PCI Express 3.0 x8 
–  Slot 2: PCI Express 3.0 x8  
Note:  
–  The PCIe riser card uses x16 mechanical connectors with x8 signals.
–  The riser card supports HBA and network/RAID adapter with external 
connection.
–  ThinkSystem SR860 1x16 PCIe FH riser 2 provides: 
–  Slot 1: GPU
–  Slot 2: Not available in the riser card
•  Slot 3: PCI Express 3.0 x16 (supports PCIe switch card or 4U PCIe riser card)
•  Slot 4: PCI Express 3.0 x8 (supports RAID adapter for SATA/SAS drives)
•  Slot 5 - 7: PCI Express 3.0 for PCIe riser card with the following slots available 
depending on the riser card 1 installed:  
–  x8/x8/x8 PCIe full-height riser assembly provides: 
–  Slot 5: PCI Express 3.0 x8 (network adapters with RJ45 connectors are not 
supported)
–  Slot 6: PCI Express 3.0 x8
–  Slot 7: PCI Express 3.0 x8
–  x8/x8/x8 ML2 PCIe full-height riser assembly provides: 
–  Slot 5: PCI Express 3.0 x8 (network adapters with RJ45 connectors are not 
supported)
–  Slot 6: PCI Express 3.0 x8
–  Slot 7: Customized slot for x8 ML2 adapter
–  x8/x16 ML2 PCIe full-height riser assembly provides: 
–  Slot 5: PCI Express 3.0 x8 (network adapters with RJ45 connectors are not 
supported)
–  Slot 6: Not available in the riser card
–  Slot 7: Customized slot for x16 ML2 adapter
•  Slot 8: Customized slot for M.2 backplane
•  Slot 9: Customized slot for LOM adapter
•  Slot 10: PCI Express 3.0 x8 
•  Slot 11: PCI Express 3.0 x8 
•  Slot 12: PCI Express 3.0 x8 (supports RAID adapters for SATA/SAS drives)
•  Slot 13: PCI Express 3.0 x16 (supports PCIe switch card or 4U PCIe riser card)
•  Slot 14 - 15: PCI Express 3.0 for 4U PCIe riser card with the following slots available 
depending on the riser card installed in slot 13:  
–  ThinkSystem SR860 2x8 PCIe FH riser 3 provides: 
–  Slot 14: PCI Express 3.0 x8
–  Slot 15: PCI Express 3.0 x8 
Note:  
Chapter 1. Introduction 3