KVM switch to operate up to 4 computers with 2 Dual-Link-DVI interfaces each via one console Product variants DL-DVI-MUX4-NT DL-DVI-MUX4-NT-DCS Dry Contacts Switching DL-DVI-MUX4-NT-MC2 DL-DVI-MUX4-NT-MC2-R DL-DVI-MUX4-NT-MC3 DL-DVI-MUX4-NT-MC4 DL-DVI-MUX4-NT-R