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• The server supports both PCIe Gen 4 and PCIe Gen 5 riser cards, but not both in the same system. Gen 4
riser cards support Gen 4 PCIe add-in cards (AICs). Gen 5 riser cards support Gen 4 PCIe AICs and Gen 5
PCIe AICs, but not both in the same system.
• 7mm drive cage installation rules:
– For server models with 8 PCIe slots or 10 PCIe slots, a 2FH+7mm SSD drive cage can be installed on
slot 3 or slot 6, but not both at the same time.
– For server models with an 8 x 2.5-inch/2 x 3.5-inch rear drive cage, one of the 7mm drive cages can be
installed:
– 2FH+7mm SSD drive cage: slot 3
– 7mm SSD drive cage: slot 6
– For server models with a 4 x 3.5-inch rear drive cage or a GPU installed, a low-profile 7mm drive cage
can be installed only on slot 6.
– For server models with a 4 x 2.5-inch rear drive cage, no 7mm drive cage is supported.
• Serial port module installation rules:
– For server models with 8 PCIe slots, 10 PCIe slots, or a 4 x 2.5-inch rear drive cage:
– If both riser 1 and riser 2 use the x16/x16/E riser card and a 7mm drive cage is installed on slot 6,
then a serial port module can be installed on slot 3. If no 7mm drive cage is installed, then a serial
port module can be installed on slot 6.
– If riser 1 uses the x16/x16/E riser card but riser 2 is not installed or not the x16/x16/E riser card, a
serial port module can be installed on slot 3 when no 7mm drive cage is installed.
– If riser 1 does not use the x16/x16/E riser card but riser 2 uses the x16/x16/E riser card, a serial port
module can be installed on slot 6 when no 7mm drive cage is installed.
– If both riser 1 and riser 2 do not use the x16/x16/E riser card, no serial port module is supported.
– For server models with an 8 x 2.5-inch/2 x 3.5-inch rear drive cage:
– If riser 1 uses the x16/x16/E riser card, a serial port module can be installed on slot 3 and a 7mm
SSD cage can be installed on slot 6.
– If riser 1 does not use the x16/x16/E riser card, a 7mm drive cage and a serial port module cannot be
installed at the same time. If no 7mm drive cage is installed, then a serial port module can be
installed on slot 6.
– For server models with a 4 x 3.5-inch rear drive cage, a 7mm drive cage and a serial port module
cannot be installed at the same time. If no 7mm drive cage is installed, then a serial port module can be
installed on slot 6.
– For server models with a double-wide GPU, the serial port module can be installed only on slot 6 when
no 7mm drive cage is installed.
Supported PCIe adapters and slot priorities
The following table lists the recommended slot installation priority for common PCIe adapters.
PCIe adapter
note1 on page 68
GPU adapter
Double-wide GPU
ThinkSystem SR650 V3 User Guide
66
Maximum
Suggested slot priority
supported
• 1 CPU: 2, 7
3
• 2 CPUs: 2, 5, 7
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