USB to Multi-Protocol Serial Adapter: RS-232 / TTL UART / RS-485

USB to Multi-Protocol Serial Adapter: RS-232 / TTL UART / RS-485

Marsoni

M251S

$37.00

Get it in 3 business days with 1 day shipping. Friday, May 29

USB to Multi-Protocol Serial Adapter: RS-232 / TTL UART / RS-485The USB to Multi Protocol Serial Adapter is a versatile serial communication interface that supports RS 232 serial, TTL UART serial, RS485, and RS422 protocols. It features quick connecting screw terminals, eliminating the need for soldering or special cables. Simply plug the adapter into a computer's USB A port. The USB connector is flippable for convenience, ensuring the labels and LEDs can always face you. Inside, an FTDI FT231 USB to serial

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Finally! A toy my aggressive chewer cannot destroy!! Can’t even get the squeaker out! No other toy has ever held up and it’s got some nice bounce to it. Perfect size so it can’t get stuck under the sofa. Furthermore, it aids in cleaning his teeth and he loves them. This is a great money saver too! Update - 3 months later - still pup’s fav…still whole - still lotsa bounce - still has squeaker intact. As good as new! I’d buy these again but don’t need to 😃!

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Reviewed in the United States on February 21, 2026

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J. Cobb

Battle Creek, US

★★★★★ 5

Toughest ball of this type.

Color: Blue

My dogs are brutal with these toys. I really like them as the spikes act as a tooth brush, and the dogs love knawing on them. There are other spiked balls like this on amazon, but this one is of better quality. It lasts a lot longer. The squeaker does not last long, the dogs teeth push it into the ball, you can hear it rattling around in there.

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Reviewed in the United States on December 1, 2025

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Georgia

Charlottesville, US

★★★★★ 4

Very good for aggressive chewers

Color: Red, Blue, Green, Yellow

Finally found ball that my aggressive chewer doesn't destroy. Has loud squeaker however he broke after 4 days. Probably better, noise gone. Very sturdy and he loves. Also big so doesn't roll under furniture.

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Reviewed in the United States on January 25, 2025

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Samantha Anthony

Dallas, US

★★★★★ 5

Durable

Color: Purple

I bought this for my 80lb 1yr American Bully male,who has made it his mission to test all the toys his dad and I have bought. Now I have 3 other American Bullies, siblings 3yr old 2 females/1male, who did the same at that age and I mastered toy shopping or so I thought. Lol. My new pup loves balls and this is the only one he firstly can't fit completely in his mouth and can't tear it apart. He has tired!

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Reviewed in the United States on May 6, 2026

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TIFF

Birmingham, US

★★★★★ 5

My Dogs Loved Them!

Color: Purple

My dogs loved these for playing fetch. They seem heavier duty than previous ones I have had. Beware of the incoming constant squeak sounds if your pup gets really into chewing it.

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Reviewed in the United States on May 8, 2026