5888952906153984 Luen Hing Electrical(HK)Limited AudioQuest USB Noise-Stopper Caps (Set of 4) USB 屏蔽防塵保護蓋 (1套4件) Eliminate Noise from Your System Cover all the unused USB-A inputs or outputs in your system Keep distortion from getting into your componen Product #: luenhingelectricalhk-AudioQuest USB Noise-Stopper Caps (Set of 4) 2022-10-27 Regular price: $HKD$270.0 Available from: Luen Hing Electrical(HK)LimitedIn stock