The height of the PCB card-fixing device can be adjusted according to requirements, so the requirement on the height processing precision of the fixing device is low;

可以根据需要调节PCB板卡固定装置的高度， 对固定装置高度上的加工精度要求低；

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The bottom mini PCIe slot accommodates half height cards (for WiFi, presumably) and you can go ahead and put an mSATA drive or full height card at the top.

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That said, PC Perspective has put in some quality time with the DDRdrive X1, which places 4GB DRAM and 4GB NAND in parallel on a full height PCIe card, keeping that volatile memory of yours safely backed up on a static disk, just in case.

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Specific PCI Express card support is dependent on usage case and chassis height.

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