Figure 88: Numbering riser modules
I Note for slot 2 in a 3.5-inch HDD chassis
If an FBU will be installed in a 3.5-inch HDD chassis, slot 2 cannot be
equipped with an expansion card.
I As an option a full height riser module can be installed (see section
"Upgrading to the full height riser module" on page 204). In this case the
slot 3 is not available and slot 4 can be equipped with a full height
expansion card.
No. Riser module Slot offered Type Description
1 Riser module 1 Slot 1 PCIe Gen3 x8 Low-profile slot, maximum length
167.65 mm (6.6 inch); dedicated
slot for modular RAID controller
Slot 2 PCIe Gen3 x4
(mech. x8)
Low-profile slot, maximum length
167.65 mm (6.6 inch)
2 Riser module 2 Slot 3 PCIe Gen3 x16 Low-profile slot, maximum length
167.65 mm (6.6 inch)
3 Riser module 3 Slot 4 PCIe Gen3 x16
(CPU2)
Low-profile slot, maximum length
167.65 mm (6.6 inch)