USB to RS232/RS485 Bidirectional Serial Converter

USB to RS232/RS485 Bidirectional Serial Converter

Marsoni

M251S

$29.00

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

USB to RS232/RS485 Bidirectional Serial ConverterUSB to RS232 RS485 Bidirectional Serial Converter USB To RS232 485 Serial Converter, Onboard Original FT232RNL Chip, Multiple Devices Applicable, Multi OS Compatible Features: Adopts original FT232RNL chip, fast communicating, stable and reliable, better compatibility Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, lightning proof & anti electrostatic Onboard self recovery

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Your USB to RS232/RS485 Bidirectional Serial Converter orders ship within 1-2 business days.

Delivery Options:

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

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly. Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration. Ended up running self tapping screws thru parts to complete assembly.

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Reviewed in the United States on February 26, 2024

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Carl L. Bradley

Birmingham, US

★★★★★ 1

Kinda flimsy…

Thought the assembly was metal, it’s some kind of PVC.

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Reviewed in the United States on September 22, 2025

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Travon Watson

Natrona Heights, US

★★★★★ 5

Stacking shelves

These work perfectly, even in rooms with high ceilings. One thing I didn’t really see mentioned or highlighted anywhere is that they can be stacked. I decided to try it anyway, and it turned out awesome. I purchased two units and placed one on top of the other, which essentially created one tall shelf. It ended up being a great way to maximize vertical space and made the setup look much more custom and intentional

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Reviewed in the United States on March 11, 2026

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Graciela Gonzalez

Alexandria, US

★★★★★ 5

Do not hesitate!

I was hesitant with some reviews saying it comes with scratches. This was packaged extremely well and it only had one or two very minimal scratches that you barely can even see. It is very sturdy and took about 40 minutes to build. It looks amazing and is not bulky but holds a lot which I love. After building this one, I immediately ordered a second one to go on the other side of my window. My son walks in and saw this bookcase and now wants one for his room, so I will be definitely ordering more.

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Reviewed in the United States on December 4, 2023

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Nelson

Birmingham, US

★★★★★ 5

Good quality

I like how looks and good quality material for the price , I’m not complaining . Good job seller , keep customer satisfaction. Thanks

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Reviewed in the United States on February 24, 2026