30 PCS 5 Types USB Dust Plugs Covers, Soft Silicone USB Port Anti-dust Plugs, Dust Covers Stoppers for USB Male Ports, USB Female Ports, USB Type C Male Female Ports, Micro USB Ports

USB-C Yubikey on my keychain because I can't be bothered to open up my authenticator app, go scroll for whatever, find the six-digit code, remember the six-digit code, and type it back in. My USB-A Yubikey failed after a few years of abuse that keychains deal with, so I was happy to see this pop up to cover up the USB-C one. Seems to do a good job of covering the USB-C plug and is snug and doesn't slip off.

I've had this less than a month, it rained once. Which killed all three USB ports completely, the standard outlets cut in and out on power. The light on the switch stays lit up, but yea, all the outlets and usb's are usable at this point.Will update review after attempting to get support from the manufacturer.

The value of these silicon USB covers cannot be overstated. Each of the 5 types fit perfectly into/over its intended usb port and was stable/secure, yet easily removed. An included case ensures portability and reduced likelihood of losing them.In terms of value, I have attempted to 3d-print similar covers in the past using TPU, and there is simply no comparison to the heat resistance and flexibility of silicon.For under $10 (as of this writing), this product is an absolute no-brainer considering the cost of the devices these covers are protecting. I wish I had found these years ago and highly, highly recommend them.