DELL E23S Series User Manual

Expansion Card Installation Guidelines

Your system supports third Generation 10 PCIe expansion card slots that include one dedicated slot for PERC 9 storage 
card and one dedicated riser-slot for Network Daughter Card (NDC).
Slot 1 connector functions as an x8 connector and can be extended as two x4 slots when the left I/O riser is installed.
Slot 9 connector functions as an x16 connector and can be extended as two x8 slots when the right I/O riser is installed.

NOTE: Left and right optional risers supports Generation 2 expansion cards. Generation 3 expansion cards will be 
supported in future.

Table 3. Supported Expansion Cards

Riser

PCIe Slot Processor 

Connection

Height

Length

Link Width

Slot Width

1

Processor 1

Full Height

Half Length

x8

x24

1 (NDC riser)

2

Processor 1

Full Height

Half Length

x8

x16 - reversed

2 (optional)

NOTE: If 
installed as 
a left I/O 
riser

1/1

Full Height

Full Length

x4

x8

2/2

Full Height

Half Length

x4

x8

3

Processor 1

Full Height

Half Length

x8

x16

4

Processor 2

Full Height

Half Length

x16

x16

5

Processor 2

Full Height

Half Length

x16

x16

6

Processor 3

Full Height

Half Length

x16

x16

7

Processor 3

Full Height

Half Length

x16

x16

8

Processor 4

Full Height

Half Length

x16

x16

9

Processor 4

Full Height

Half Length

x16

x24

3 (optional)

NOTE: If 
installed as 
a right I/O 
riser

1/9

Full Height

Full Length

x8

x16

2/10

Full Height

Half Length

x8

x16

NOTE: The expansion cards are not hot-swappable. Ensure the AC power supply is completely removed before 
installing the expansion cards.

The following table provides guidelines for installing expansion cards to ensure proper cooling and mechanical fit. The 
expansion cards with the highest priority should be installed first using the slot priority indicated. All other expansion 
cards should be installed in card priority and slot priority order.

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