USB To 4Ch Serial RS232 Converter

Marsoni

M251S

$69.00

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

USB To 4Ch Serial RS232 ConverterUSB To 4Ch Serial RS232 Converter Industrial Isolated USB To 4 Ch RS232 Converter, USB To Serial Adapter, Original FT4232HL Chip, Mac Linux Android Windows Multi OS Compatible, Wall Mount Support Features: Adopts original FT4232HL chip, fast communicating, stable and reliable, better compatibility Supports USB to 4 ch isolated RS232, convenient for expanding multiple RS232 industrial serial devices Onboard unibody power supply isolation, provides

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

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Exchange/Return Notes

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Great price. It does what it's supposed to do. Keeps my air flow clean. Super easy to install, I can't believe mechanics charge to do this. Once you see how easy it is, you'll save yourself that expense. The material is top-quality charcoal, so it cleans all the nasty mold particles from getting into the vehicle. There is no smell, and that is a plus.

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Reviewed in the United States on January 1, 2026

Verified Purchase

Nette Brown

Grantham, US

★★★★★ 5

Perfect fit

Perfect fit and good construction

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Reviewed in the United States on May 25, 2026

Verified Purchase

William Mateuszczyk Jr.

Chelsea, US

★★★★★ 5

Better then OEM

Size: (Pack of 1)

I’m writing this for my 2022 Honda Accord Sport 2.0T.. Honda wanted to charge me $85 to replace the air filter, immediately after I bought this filter for $17. Just changed it 5 minutes ago and let me tell you, it was identical to the oem Honda filter. Fit perfectly, quality was same if not better then the original one. Functions amazing and air quality is great. Car definitely felt happy after replacing it. 10/10

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Reviewed in the United States on July 20, 2025