Installing System Components 107Expansion Cards and Expansion-Card RisersExpansion Card Installation GuidelinesYour system supports up to six Generation 2 PCIe expansion cards usingconnectors on the system board and two expansion-card risers. To locate theexpansion-card connectors on the system board, see Figure 6-1 and to locatethe expansion-card connectors on the expansion-card risers, see Figure 6-4 andFigure 6-5.The following are the slot configurations on the risers and the system board:• Riser 1– Slot 1: x8 link expansion slot (24.13 cm [9.5"] length)– Slot 2: x4 link expansion slot (low-profile 24.13 cm [9.5"] maximumlength, with a standard height bracket)• System Board– Slot 3: x8 link expansion slot (low-profile 24.13 cm [9.5"] length)– Slot 4: x8 link expansion slot (low-profile 24.13 cm [9.5"] length)• Riser 2– Slot 5: x8 link expansion slot (24.13 cm [9.5"] length)– Slot 6: x8 link expansion slot (24.13 cm [9.5"] length)NOTE: The length specified above is of the expansion cards.NOTE: Ensure that both riser 1 and riser 2 are installed in the system before youturn the system on.CAUTION: To ensure proper cooling, only two out of the six expansion cards canhave a power consumption greater than 15 W (up to 25 W maximum), not includingthe integrated storage controller.Table 3-4 provides a guide for installing expansion cards to ensure propercooling and mechanical fit. The expansion cards with the highest priorityshould be installed first using the slot priority indicated. All other expansioncards should be installed in card priority and slot priority order.
