Expansion card installation guidelines
Figure 69. Expansion card slot connectors
1. Riser 4 slot
2. Riser 3 slot
3. Riser 2 slot
4. Riser 1 slot
Table 35. Expansion card risers
Expansion card
riser
PCIe slots on the
riser
No. of slots
Processor
connection
height
length
Slot
width
R1a (Riser 1)
Slot 1
1
Processor 1
Full height
3/4th length
x16
R2a (Riser 2)
Slot 1
2
Processor 1
Low profile
Half length
x16
Slot 2
Processor 2
Low profile
Half length
x16
R2b (SANPI
Riser)
Slot 1
2
Processor 1 and 2
Low profile
Half length
x16
Slot 2
Processor 2
Low profile
Half length
x8
R3a (Riser 3)
Slot 3
1
Processor 2
Low profile
Half length
x16
R4c + R4d (Riser
4)
Slot 2
1
Processor 2
Full height
3/4th length
x16
R1d (Paddle card)
Slot 1
1
Processor 1
Low profile
Half length
x16
Installing and removing system components
83