3.5-inch Apollo Lake SBC has dual mini-PCIe slots and triple displays
3.5-inch Whiskey Lake SBC has mini-PCIe and dual M.2
Small but Mighty Pico-ITX SBC with PCIe x4 for Flexible Integration - HYPER-EHL
Skylake-based Nano-ITX SBC offers 4x GbE and stackable PCIe
3.5" SBC with Intel® Celeron N3160, DDR3L, VGA, HDMI, 48-bit LVDS, dual GbE, Mini PCIe, mSATA
Quartz64 Model A – PCIe & SATA SBC - YouTube
Amazon.com: Acrosser Technology AMB-BT19S1, 3.5" Single Board Computer(SBC) with Intel Celeron J1900, VGA, LVDS, USB 2.0, Mini PCIe, SATA 2.0 : Electronics
NEW GW6400 Networking SBC with 5x GbE & 4x Mini-PCIe - Gateworks Corporation - Single Board Computers
DFI | ALF51 | 1.8" SBC Intel Atom E3900 with 2 LAN 1 Mini DP++ 1 Mini PCIe
Single Board Computers With Mini PCIe Expansion Slots – Premio Inc
ASRock Industrial - SBC-331V
Amazon.com: Khadas Single Board Computer, VIM3 Basic Amlogic A311D,Faster CPU,Neural Processing Unit for A.I.Switchable PCIe and USB 3.0,Dual Independent Displays,Dual Cameras(2+16GB) : Electronics
New 35x100mm Small i.MX8M Mini Single Board Computer (SBC) - Gateworks Corporation - Single Board Computers