One way for a small subcontractor to meet increasing global competition is to develop a system supplying ability, which implies more focus on logistical issues and a larger overall responsibility in the supply chain. Certain logistics capabilities have been identified as important to a small- or medium-sized subcontractor in order to cope with the system supplying role. Interviews have been carried out in a multiple case study with the purpose of identifying important resources for a smaller supplier with the ambition of forming logistics capabilities to support system supply. Resources within three different areas have been identified: organizational, competence base, and tools. Conclusions from a comparison among three companies, with different degrees of system supplying services, point out the importance of an organization with clear and distinct responsibilities and authorities. Competencies in logistics and enhanced understanding and use of IT support and communication systems are identified as areas to improve for the smaller companies.