DVX is the first series of DVI extenders developed by SmartAVI when digital video was in its infancy. Still going strong, this line of extenders can reach up to 225ft using CAT5e/6 STP cables. The series includes very innovative and practical solutions such as the RK-DVX200 which can extend up to 16 DVI signals from a single rack mountable unit, and the DVX-2P and -4P which extend KVM stations containing two or four monitors.