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Protective Caps & Covers

Keep dust, moisture and stray contact out of the ports you aren't using. Our protective caps fit USB Type A, B, C, Mini and Micro, HDMI, DisplayPort, serial D-sub, RJ45 and RJ11 jacks, 3.5 mm audio, SATA, eSATA, FireWire, Lightning and power connectors, in flush-face and easy-pull handle-grip styles.

Most are our own Best Byte line, sold singly from about ten cents, with quantity pricing for larger runs. Need a color or size we don't list? Ask about custom caps made to your spec.

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[CBPH01JCF2] RJ11 Phone Jack Protective Cover Flush Face Black, TYPE 2 RJ11 Phone Jack Protective Cover Flush Face Black, TYPE 2
RJ11 Phone Jack Protective Cover Flush Face Black, TYPE 2
Protective cap / cover for a standard RJ11 telephone, modem jack, wall outlet, fax machine, etc. Protect unused phone jacks from dirt, dust, and damage. These are also useful to block ports and can be glued in place.
$ 0.35
[CBAU01CAPCR] 3.5mm Audio Male Cable End Cover Cap, Soft PVC, Red 3.5mm Audio Male Cable End Cover Cap, Soft PVC, Red
3.5mm Audio Male Cable End Cover Cap, Soft PVC, Red
Red color version. This part also currently stocked in black or white. These soft vinyl covers fit over the male end of a standard 3.5mm audio cable with a snug friction fit. Use them to keep out dust, dirt, debris, and moisture. Custom colors may be special ordered.
$ 0.29
[CBFW01CP6F] Firewire IEEE1394 6Pin Cap / Cover Flush Face BLACK Firewire IEEE1394 6Pin Cap / Cover Flush Face BLACK
Firewire IEEE1394 6Pin Cap / Cover Flush Face BLACK
These hard to find covers are perfect for protecting unused firewire female ports in our panel mount couplers or any expensive equipment from physical damage, dirt and dust. Made from soft plastic, these covers attach easily and stay in place with a snug friction fit. Color is black.
$ 0.55
[CBAU01CAPCW] 3.5mm Audio Male Cable End Cover Cap, Soft PVC, White 3.5mm Audio Male Cable End Cover Cap, Soft PVC, White
3.5mm Audio Male Cable End Cover Cap, Soft PVC, White
White color version. This part also currently stocked in black or red. These soft vinyl covers fit over the male end of a standard 3.5mm audio cable with a snug friction fit. Use them to keep out dust, dirt, debris, and moisture. Custom colors may be special ordered.
$ 0.29
[CBUS01CAPFW] USB Protective Cap / Cover for Type A Jacks Flush Face WHITE USB Protective Cap / Cover for Type A Jacks Flush Face WHITE
USB Protective Cap / Cover for Type A Jacks Flush Face WHITE
These unusual caps / covers are perfect for enhancing security by blocking unauthorized access to USB female ports. When fully inserted they are difficult to remove but you can add a drop of glue for greater security. They are also used to protect expensive equipment or panel mount couplers from physical damage, dirt, and dust. They attach easily and stay in place with a snug friction fit. Custom colors are available by special order.
$ 0.24
[CBUS01CAPFG] USB Protective Cap / Cover for Type A Jacks Flush Face GRAY USB Protective Cap / Cover for Type A Jacks Flush Face GRAY
USB Protective Cap / Cover for Type A Jacks Flush Face GRAY
These unusual caps / covers are perfect for enhancing security by blocking unauthorized access to USB female ports. When fully inserted they are difficult to remove but you can add a drop of glue for greater security. They are also used to protect expensive equipment or panel mount couplers from physical damage, dirt, and dust. They attach easily and stay in place with a snug friction fit. Custom colors are available by special order.
$ 0.24