Noise filter Ferrite - Noise reduction There are many sizes - homenet48
Amazon.com: uxcell 3.5mm Ferrite Cores Ring Clip-On RFI EMI Noise Suppression Filter Cable Clip, Black 10pcs : Electronics
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Amazon.com: Konohan 20 Pieces Ferrite Bead Clip on Ferrite Core Ferrite Noise Supressor Ferrite Rings RFI EMI Noise Filter Cable Clip for USB Video Data Cable, 0.11/0.19/0.27/0.35/0.51 Inch Inner Diameter, Black : Electronics
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