Embedded PC chassis SMARTCASE™ S903

compactindustrialfor mini-ITX motherboards

Product Highlights

• Compact industrial Mini-ITX chassis (190 × 75.2 × 189 mm)
• Dual front USB Type-A connectors
• Drive bay for up to 2x 2.5" SSD
• Supports passive (fanless) and active cooling (dependent on heatsink)
• Optional / removable front panel mounting

Product Information
The SMARTCASE™ S903 is a compact chassis engineered for industrial and embedded applications. It accommodates Mini-ITX motherboards K3836-Q/R, K3832-Q, K3831-H and K3931-Nx and is optimized for installation in space-constrained environments while providing industrial-grade integration options and service features.
The chassis supports passive cooling solutions up to 15 W TDP and active cooling solutions up to 35 W TDP, depending on the selected heatsink. Front I/O includes dual USB Type-A connectors. Storage options include a drive bay for up to two 2.5" SSDs. Multiple expansion apertures allow integration of antennas, COM ports or additional power connectors. Security and serviceability are addressed via a Kensington lock, screw-on DC-IN connector and an industrial power button with LED.

Technical data
Dimensions (W × H × D): 190 x 75.2 x 189 mm (197 mm with grounding bolt)
Colour: black
Weight: approx. 1 kg
Operating temperature: passive (fanless) -10 °C to +40 °C (max. 15 W TDP); active (with fan) -10 °C to +45 °C (max. 35 W TDP) — chassis ambient temperature
Humidity: 5 % – 85 % RH (non-condensing)

Compatible motherboards

• K3836-Q/R
• K3832-Q
• K3831-H
• K3931-Nx

Integration & features

• Passive cooling support up to 15 W TDP; active cooling up to 35 W TDP (depends on heatsink selection)
• Dual front USB Type-A connectors
• Drive bay for up to two 2.5" SSDs
• Optional / removable front panel mounting
• Multiple expansion apertures for antennas, COM ports or power connectors
• Security & serviceability: Kensington lock, screw-on DC-IN connector, industrial power button with LED
• Extensive compatible accessories portfolio; designed for industrial use and supports standard certifications

Characteristics / Technical specifications

• Model: SMARTCASE™ S903
• Form factor: compact chassis for Mini-ITX motherboards
• Outer dimensions: 190 x 75.2 x 189 mm (197 mm with grounding bolt)
• Colour: black
• Weight: approximately 1 kg
• Cooling support: passive (fanless) up to 15 W TDP; active (with fan) up to 35 W TDP
• Storage support: up to 2 x 2.5" SSD
• Front I/O: dual front USB Type-A connectors
• Expansion: multiple apertures for antennas, COM ports, power connectors
• Security: Kensington lock
• Power: screw-on DC-IN connector
• Controls: industrial power button with LED
• Compatible motherboards: K3836-Q/R, K3832-Q, K3831-H, K3931-Nx
• Operating temperature range: -10 °C to +40 °C (passive) / -10 °C to +45 °C (active)
• Humidity: 5 % - 85 % relative humidity (non-condensing)