Asrock A320m Pro4 Micro Atx Am4 Motherboard | A320 Motherboard Mini Itx - New A320 - Aliexpress
The first Mini-STX motherboards based on Intel's 5x5 platform are here - Liliputing
Stx-n29_2l Fanless Quad Core Dual Lan J1900 Small Mini Nano Pc Board Motherboard - Buy Mini Pc Board,Mini Motherboard,Small Motherboard Product on Alibaba.com
Amazon.com: CUK ASRock H670M-ITX/ax Mini ITX Motherboard for 12th Gen Intel LGA 1700 CPUs at 125W PL1 with PCIe 5.0 x16 Graphics : Electronics