sbc slotThe two PMC slots support modules up to 64-bit133-MHz PCI-X, while the XMC slots are powered by two PCI Express x1 links each. The modular combination of IO functionality on a1.8 SBC with R1606G CT-NR101 Series. The CT-NR101 1.8 Embedded SBC is an extremely compact single board computer with an AMD Ryzen™ Embedded R1606G SoC processor