Add-in Card Limitations
The Intel® NUC 12 Extreme / Pro X Kit supports the installation of add-in PCIe cards. The PCI Express 4.0 x16 and 4.0 x4 connectors on the baseboard mentioned in Section 2.16.3 are designed to accept PCI Express compliant devices. The table below demonstrates the maximum accepted dimensions and specifications for add-in cards.
Table 9. PCI Express Add-in Cards Limitations
Add-in Card Type
PCI Express 5.0 x16 Add-in Card Dual Slot
Dual Slot Spec limit Total 39mm (34.8mm Front components +2.7mm rear backplate +1.7mm PCB thickness)
131mm From Card edge to absolute top most component or cable of card
The maximum power consumption supported for add-in card design is 375W (150W from each PCI Express 6+2/8pin + 75W from PCI Express Slot).
For a list of validated and compatible add-in cards go to the Intel® Product Compatibility Tool https://compatibleproducts.intel.com/ProductDetails?activeModule=Intel® NUC