CH121 expansion slots

The CH121 supports one standard PCIe card, which can be a 400 GB, 800 GB, 1.2 TB, or 2.4 TB PCIe SSD card.
If a PCIe card is configured, DIMMs cannot be installed in the six DIMM slots under the PCIe card due to limited space.
For details about the PCIe expansion cards supported by the CH221, see the compatibility checker:

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