How to Choose an Industrial Motherboard for Automation Applications

Step 1: Choose the Form Factor

• ATX (305×244mm) — full-size; maximum expansion slots; for demanding SCADA servers and vision systems
• Micro-ATX (244×244mm) — mid-size; good balance of expansion and space
• Mini-ITX (170×170mm) — compact; ideal for Panel PCs and embedded Box PCs
• Thin Mini-ITX — ultra-slim profile; designed for Panel PC integration
• 3.5" SBC — very compact; for IoT gateways and space-constrained installations

Step 2: Processor Generation and TDP

For fanless systems, stay within the chassis TDP rating. Intel Core Ultra and Core i5/i7 12th–14th Gen offer excellent performance-per-watt for industrial applications. Avoid end-of-life processors (7th Gen and older) for new designs — spare parts and driver support become difficult.

Step 3: Required I/O

List your physical I/O requirements before selecting a board:

• Number of COM ports (RS-232/422/485) needed for PLCs and serial devices
• Dual LAN for OT/IT network separation
• Display outputs (HDMI, DP, LVDS, eDP) for your screen configuration
• USB ports for operator peripherals and USB keys
• GPIO for digital I/O to field devices

Step 4: Long-Term Availability

This is the most critical factor for industrial applications. Consumer motherboards are discontinued in 12–18 months. Industrial motherboards from Avalue carry 5–7 year availability commitments, with extended support agreements available. Always confirm the product lifecycle before committing to a design.

Step 5: Operating Temperature

Standard: 0°C–60°C. Extended: −20°C–70°C. Wide: −40°C–85°C. Match the board's rated temperature to your installation environment, including worst-case seasonal temperatures for your facility.