Does this have a genuine prolific chip inside? Or does it show a warning message in devicemanager and/or make you use an old driver to get it working?

It uses the genuine 2102 chip of cp210x series. Before make it work in Windows, you need to install driver, https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers

Can you set 3v3 logic levels?

Let me take am example. You should connect the 5V pin if you use it with Mega 2560, and connect the 3.3V pin if use with the 3.3V board.

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DIYmalls 6 in 1 CP210x 2102 USB to TTL Serial RS232 RS485 Module

DIYmalls 6 in 1 CP210x 2102 USB to TTL Serial RS232 RS485 Module

Product ID: 177451273

Details

Brand
DIYmalls
Colour
Blue
Compatible devices
Computers PC
Connector type
usb
Specific uses for product
Electronic &

⚡3A current rating with overcurrent protection

💻Cross-platform USB 2.0 compatibility

🔌6-in-1 versatile port conversion

$23.58

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Description

🔗 Connect smarter, code faster — the ultimate serial adapter for pros on the move!

DUAL VOLTAGE SUPPORT - Operates at both 3.3V and 5V, making it perfect for diverse hardware projects without extra converters.
ROBUST POWER HANDLING - Supports up to 3 Amps with built-in overcurrent protection for reliable, safe operation.
PLUG PLAY ON MULTIPLE OS - Compatible with Windows XP through 10, Linux, and Mac for effortless integration into your workflow.
UNIVERSAL 6 IN 1 SERIAL ADAPTER - Seamlessly switch between USB to TTL, RS232, RS485 and more with a single compact module.
CUSTOMIZABLE DIP SWITCH SETTINGS - Easily configure your connection mode to match your device needs—flexibility that keeps you ahead.

The DIYmalls CP210x Series 2102 is a versatile 6-in-1 USB to serial adapter module supporting USB to TTL, RS232, RS485 conversions and more. It features a 3A current rating with overcurrent protection, works across multiple operating systems including Windows and Linux, and supports both 3.3V and 5V logic levels. Ideal for Arduino, GPS, LIDAR, and other embedded projects, this compact module offers customizable DIP switch settings for flexible connectivity.

Specifications

ASIN	B082V9WJKW
Best Sellers Rank	30,016 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 58 in Serial Adapters
Brand Name	DIYmalls
Colour	Blue
Compatible Devices	Computers, including PC and Mac
Connector Type	usb
Country of Origin	China
Current Rating	3 Amps
Customer Reviews	4.4 4.4 out of 5 stars (31)
Input Voltage	5 Volts (DC)
Item Weight	0.35 Ounces
Manufacturer	DIYmalls
Manufacturer Part Number	WT2760
Model Number	CP210x Series 2102
Nominal Power	15 Watts
Number of Items	1
Number of Ports	6
Package Quantity	1
Power Plug Type	No Plug
Specific Uses For Product	Electronic projects & setups
UPC	747356634212
Unit Count	1.0 count
Warranty Type	Limited

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