46
• HHHL—Half height and half length.
• HHFL—Half height and full length.
Riser card and PCIe module compatibility
Guidelines
If a processor is faulty or absent, the PCIe slots connected to it are unavailable. For more information
about riser card, PCIe slot, and processor mappings, see "Riser cards and PCIe modules."
The server provides three PCIe riser connectors on the system board to connect riser cards, which
hold PCIe modules. For more information about the connector locations, see "System board
components." For information about PCIe slots on a riser card, see riser cards in "Riser cards."
You can install a PCIe module in a PCIe slot for a larger-sized PCIe module. For example, an LP
PCIe module can be installed in a slot for an FHFL PCIe module.
A PCIe slot can supply power to the installed PCIe module if the maximum power consumption of the
module does not exceed 75 W. If the maximum power consumption exceeds 75 W, a power cord is
required.
The description for PCIe5.0 x16 (8,4,2,1) is as follows:
• PCIe5.0: Fifth-generation signal speed.
• x16: Connector bandwidth.
• (8,4,2,1): Compatible bus bandwidth, including x8, x4, x2, and x1.
For an x8 MCIO connector, x8 indicates the bus bandwidth.
Riser card and PCIe module compatibility
Table 20 Riser card and PCIe module compatibility (1)
Riser
card
model
Riser card
location
on a riser
card
PCIe
connector
description
PCIe
connector
PCIe
slot
power
capabi
Proc
esso
r
RC-3FH
FL-2U-G
6
connector 1
Slots 1
through 3
PCIe5.0 x16
(16,8,4,2,1)
FHFL 75 W
Proce
ssor 1
SLOT 1-A
connector
Connected to MCIO
connector C1-P3A on
providing
link for slot 1 with x8
MCIO connector SLOT
1-C
N/A
Proce
ssor 1
SLOT 1-C
connector
Connected to MCIO
connector C1-P3C on
providing an
link for slot 1 with x8
MCIO connector SLOT
N/A
Proce
ssor 1
SLOT 2-A
connector
Connected to MCIO
connector C1-P2A on
providing an
link for slot 2 with x8
N/A
Proce
ssor 1
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