I will strive to provide courteous service. Comments are not needed. Thank you very much (^^) Protect your ports! Dust-proof USB connector covers, large set of 20 Computers, dustproof, waterproof, silicone, female port, PC, Mac, PS4 Introducing USB connector covers to prevent dust from entering PCs and game consoles! USB caps, USB connector caps We have prepared a great value set of 20 pieces. USB ports do not have covers, so they easily allow dust to enter. This dust and dirt can cause poor contact and shorten the life of the device, so protection is important. To prevent dust and dirt from accumulating inside, protect your devices with USB connector covers. Installation is super easy! Simply insert the silicone cover into the USB connector. This product uses safe silicone material that is gentle on the terminals. It adheres firmly and is unlikely to fall out, providing peace of mind. It can protect your devices not only from dust but also from moisture. The color is black, which is not too conspicuous. The simple design allows for dust protection without compromising the design of laptops, etc. It can prevent poor contact due to moisture and dirt, and is expected to create an environment where devices are less likely to fail. By preventing rust and oxidation, the hardware becomes more stable, and it will help your important devices last longer.