GPUs
Use this section to understand the routing for GPUs.
Figure 14. Cable routing for single-wide and double-wide GPU
From To
1  Power connector on a single-wide GPU (on riser 3 
assembly)
GPU 1 connector on the system board
2  Power connector on a double-wide GPU (on riser 1 or 
2 assembly)
GPU Pwr connector on the riser card (on riser 1 or 2 
assembly)
Riser cards
Use this section to understand the cable routing for riser cards.
The server supports up to three riser cards: riser card 1, riser card 2, and riser card 3. Among which, only 
riser card 3 needs cable connections:  
• 
“Riser card 3 power and sideband connection” on page 60
•  “Riser card 3 (x8/x8 or x16/x16 PCIe) cable connection” on page 61
The riser card types vary by server model. For detailed information, see “Rear view” on page 33.
Chapter 3. Internal cable routing 59