PortPlugs started with sand in a phone and an expensive repair. More than a decade later, the idea is still straightforward. Protect the openings your case leaves exposed, and choose the right kind of protection for the job.
Founder David Lewis shares the thinking behind the company, what matters in a good fit, and why a personal phone and a shared office computer call for different solutions.
What started PortPlugs?
A day at the beach in San Diego. Sand and dust ended up packed into the ports of my Samsung Galaxy, and the repair was expensive. Afterward, I wanted something simple that would cover those openings without putting the phone in a bulky weatherproof case.
That search became PortPlugs in 2014. It was a small problem with a very real cost. I thought there was room for a straightforward solution that people could use with the devices and cases they already owned.
How does your wireless background shape the way you look at products?
My background includes more than a decade in the wireless industry, and I’ve also been running PortPlugs for more than a decade. My focus is on what happens once a device leaves the box.
A phone goes into a pocket, gets set down on a workbench, and comes along for a day outside. Office equipment gets shared, moved, and handed to the next person. Protection has to make sense in those settings. If using it is a chore, it is asking too much.
Why pay attention to something as small as a port?
Because it is easy to protect most of a device and overlook the opening you still depend on. A case can cover the back and corners while leaving the charging port exposed.
A dust plug covers an unused port to help keep dust and debris out. That is the job. It does not repair a damaged connector, remove debris already inside, or give your device a new waterproof rating. I would rather people understand that clearly than expect a small accessory to do everything.
What makes a good fit?
Start with the actual connector. USB C, Lightning, and USB A need different shapes. Then look at the space around the port, including the opening in your case. The right connector type alone does not guarantee the right fit.
I want a plug that sits securely and can be removed when the port is needed. Excessive resistance is a reason to stop and check compatibility. It is not a reason to push harder. Inspect the port first, follow the device maker’s cleaning guidance, and make sure it is clean and dry before covering it.
What changes when you are protecting a business’s equipment?
The question becomes bigger than one person’s phone. Which ports should staff be able to use? Which should stay closed? Who needs access when equipment is serviced?
For an unused port on a reception computer or shared workstation, the concern may be physical access as well as dust. Port blockers are a different tool from soft dust plugs. They are designed to restrict access to compatible ports, with removal requirements that depend on the product.
They belong in a broader plan that includes the organization’s software controls and procedures. I would start with a small pilot on the actual equipment, check the clearance beside neighboring ports, and decide who holds the removal tools before ordering for the whole office.
What is the most useful distinction for buyers to understand?
A dust plug, a port blocker, and a USB data blocker do different jobs. A dust plug covers an unused opening. A physical port blocker restricts access to that opening. A compatible USB data blocker sits in a charging connection and is designed to prevent data transfer while allowing power.
You cannot charge through a physical plug that is occupying the port. If public charging is the concern, that distinction matters. Choose the product for the problem you actually have.
What would you tell someone choosing their first set?
Check the port, the case, and how often you need access. If you usually charge wirelessly, a removable dust plug may suit a port you rarely use. If you connect a cable several times a day, think about removal and where you will keep the plug between uses.
For a team, check the devices individually before assuming they all need the same thing. A small sample order can answer fit and access questions before a larger purchase.
My view is simple. A useful accessory should do its job, fit the way you work, and be easy to live with. That is the thinking behind PortPlugs.
Read our founding story or explore options for business and bulk orders.
Featured photograph of Pacific Beach, San Diego, by Micah Fluhart / Unsplash.




