I/O expansion options
The server supports up to eight PCIe slots, not including the mezzanine LOM slot. Five slots are on the
system board and three are through a riser card. A riser card is standard on some models as shown in the
table below. It is optional on all other models. The use of slots 1 - 5 require processor 2 to be installed. The
following table lists the ordering information for the riser cards.
Table 12. PCI riser card options
Part number
Feature
code
Description
Standard models
where used
Maximum
supported
88Y7371
A2A1
x3750 M4 PCIe 3 x8 riser
B2x, C1x
1
00D2009
A419
x3750 M4 PCIe 1x16 and 1x8 riser
-
1
The three slots on the PCIe 3 x8 riser are as follows:
Slot 1: PCIe 3.0 x8 (x16 mechanical): Full-height, half-length (requires processor 2)
Slot 2: PCIe 3.0 x8 (x16 mechanical): Full-height, half-length (requires processor 2)
Slot 3: PCIe 3.0 x8 (x16 mechanical): Full-height, half-length (requires processor 2)
The two slots on the PCIe 1x16 and 1x8 riser are as follows:
Slot 1: PCIe 3.0 x16: Full-height, half-length (requires processor 2)
Slot 2: PCIe 3.0 x8 (x16 mechanical): Full-height, half-length (requires processor 2)
Slot 3: Not present
The five standard slots on the system board are as follows:
Slot 4: PCIe 3.0 x8: Low profile, half-length (requires processor 2)
Slot 5: PCIe 3.0 x8: Low profile, half-length (requires processor 2)
Slot 6: PCIe 3.0 x8: Low profile, half-length
Slot 7: PCIe 3.0 x8: Low profile, half-length
Slot 8: PCIe 3.0 x8: Low profile, half-length
Lenovo System x3750 M4 (8753)
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