Hardware troubleshooting and FAQs ← Knowledge Base Image alignment and projector troubleshooting Touch hardware troubleshooting Why is there color variance between the projectors? What is the IP range for the image alignment module and can it be customized? Warranty, warnings and important information How do I deal with warranty and product defects? How long will it take to fix my defective product? Why isn't touch working properly? How often should I change the projector dust filter? Reduce fan noise with ECO mode Can I connect a computer monitor to the PC connected to the projector? Can I connect my PC wirelessly to the projector? Can I use Span™ software with other interactive displays? What are the best USB extenders to use with the Span™ system?