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

Easy Shipping

Quick Dispatch:

Your USB to Multi-Protocol Serial Adapter: RS-232 / TTL UART / RS-485 orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your USB to Multi-Protocol Serial Adapter: RS-232 / TTL UART / RS-485 ships.

Need Help?
Questions about USB to Multi-Protocol Serial Adapter: RS-232 / TTL UART / RS-485, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for USB to Multi-Protocol Serial Adapter: RS-232 / TTL UART / RS-485 in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

decent product. not as thick as typical sound deadening but definitely cheaper. and for my application, i didnt need a name brand thicker material. i am putting it on our heat and ac vent and intake pipes during our remodel. sound travels from room to room in our old house through these vents and pipes so a little sound deadening goes a long way

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on June 2, 2026