User Manual

I/O expansion options
The ST250 server has four PCIe 3.0 slots, as follows:
Slot 1: PCIe 3.0 x1 full-height, half-length
Slot 2: PCIe 3.0 x16 full-height, half-length
Slot 3: PCIe 3.0 x4 full-height, half-length
Slot 4: PCIe 3.0 x4 full-height, half-length (x8 physical slot)
The following figure shows the locations of the PCIe slots.
Figure 9. ThinkSystem ST250 PCIe slots
Network adapters
Lenovo ThinkSystem ST250 Server 31