Review on 🔁 Plugable USB 2.0 Switch for Easy One-Button USB Device Port Sharing Between Two Computers (AB Switch) - Enhanced SEO by Mike Stevenson

This is a very good design in every respect except a very bad one. As soon as I took it out of the box and plugged it in, I was puzzled by (a) the difficulty in selecting the correct port (sometimes it would switch to one and then another a moment later) and (b) the apparent lack of correlation between the selected port and the LEDs. The discovery revealed the problem. It uses a double pole double throw (DPDT) switch to toggle between terminals A and B, and a similarly sized single pole double throw (SPDT) switch between green (A) and blue (B) LEDs. (I didn't look inside the LED switch, and it could just be a second DPDT switch using only one pole, for a simpler bill of materials (BOM).) The two switches are connected by a black, externally accessible button , which sits on top of both switches. When the button is in the up position, port A and LED A are selected, and when the bottom is button B and LED B. Aside from the outer button being so small that it's uncomfortable to manipulate, this would work better if the button was properly sealed with epoxy. two little white buttons that operate two cheap little switches (which will fail after some use anyway). But the glue was more like Elmer's school glue and ended up with the big button pressing the switches independently, wiggling left when port A was selected and pointing at LED B, and right when it wasn't. Also, both switches must be fully down to shift properly; If one or both switches are only halfway depressed, they switch momentarily, but spring back when released. As a result, your device is always securely connected to one port or another and exactly one LED is always lit, but the device appears to contain a daemon that has its own opinion on which port you want, and beyond that, flips a coin and tell you which. this can result in torque that can further shorten the life of these tiny flimsy up-down switches). In the meantime I've left out the top cover and external button and I find it easy to press both small white buttons at the same time with my index finger. If they're not both up (A) or both down (B), I'll feel it right away and press again to align them. However, since I can feel and see if each switch is on, I really only need to control the port switch and ignore the LEDs. I believe this is the first time I've given only one star to a device I can actually use, but this design flaw was so obvious that I couldn't bring myself to give a second star. My recommendation for a design change would be a single, less weak 3-pin 2-way switch (3PDT) or ideally a 3PDT IC like the NX3DV642 for $0.31 and indestructible compared to a mechanical switch.