Mini Pcie Pcie 1 To 3 Pci Slot Riser Card Mini Itx To External 3 Pci-e Slot Adapter Pcie Port Multiplier Card For Motherboard - Pc Hardware Cables & Adapters - AliExpress
Mini Pcie To 2 Pci Slots Adapter For Mini Itx Motherboard Mini Pci Express To Pci Riser Card For Sound, Network, Graphics Card - Add On Cards & Controller Panels - AliExpress
Mini-ITX Seaberry adds 11 PCIe slots to a Raspberry Pi | Jeff Geerling
Mini ITX Motherboard|DFI
ASUS Core i3 4GB Mini-ITX Motherboard CPU Memory Combo PCIe x16 3x HDMI 2x LAN | eBay
ASRock B550M-ITX/AC Mini-ITX Motherboard Ryzen 3rd Gen Socket AM4 DDR4 4733 (Max 64GB) 1x PCIe 4.0 x16 HD Audio DisplayPort
Thin Mini-ITX SBC brews Coffee Lake with triple HDMI and PCIe x16
MANO540: a Mini ITX board with full height PCIe x16 slot
Advantech Industrial-grade Mini-ITX Motherboard that supports i7/i5/i3 (LGA1151), H310 Chipset.