Computer/Digital RFI Solutions Ferrite filter products can help speed up digital devices by suppressing common mode current from RFI sources OR prevent digital devices from emitting RFI on its connecting cables and power supply lines. Mix 75 Store / Mix 75 Ring - Mix 75 RFI Range: 150 Khz-10 MHz Ring - Mix 75 RFI Range: 150 Khz-10 MHz Snap On - Mix 75 - RFI Range 150 KHz-10 MHz Snap On - Mix 75 - RFI Range 150 KHz-10 MHz Slip On - Mix 75 - RFI Range 150 KHz-10 MHz Slip On - Mix 75 - RFI Range 150 KHz-10 MHz