Why does the product photo have a jumper across txd and rxd?

The jumper between TX and RX is mainly used for testing. Short TX, RX means you will receive any data you send. When you program or debug, you can quickly confirm if the TTL adapter is damaged. It saves you time and quickly locates faults.

What is the maximum baud rate of this device?

Build-in FTDI FT232RL Chip, max speed is to 3Mb/s . After testing, we found that data can be transmitted stably below 115200 baud rate.

Does this work with the arduino ide to upload sketches to the arduino pro mini?

yes ,it work with arduino ide to upload sketches to pro mini.

I want to confirm, 5v from the usb side is output to vcc as 5v or converted to 3.3v /1.8v by jumper and sets ttl interface level correct?

Hi, I just checked this on mine with a DMM to verify. Your assumption is correct: the jumper will alter the VCC to 5/3.3/1.8V.

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DSD TECH SH-U09C2 USB to TTL Adapter Built-in FTDI FT232RL IC for Debugging and Programming

Product ID: 152129318

Details

Color
Multicoloured
Compatible Devices
Hard Drive
Connector Type
USB Type A
Item dimensions L x W x H
1.5 x 0.4 x

⚡FTDI FT232RL IC for ultra-reliable data transfer

🔄Switchable 5V/3.3V/1.8V logic levels via jumper

🛡️Transparent protective case guards against static & shorts

QAR 79

Duties & taxes included

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Description

⚡ Power your projects with precision and protection!

DURABLE SAFE DESIGN - Transparent protective casing shields your adapter from static interference and accidental short circuits, keeping your projects safe.
LOGIC LEVEL FLEXIBILITY - Easily toggle between 5V, 3.3V, and 1.8V TTL logic levels to match your device’s needs without extra adapters.
PLUG PLAY FTDI POWERHOUSE - Built-in original FTDI FT232RL IC ensures seamless, high-speed USB to TTL communication for flawless debugging and programming.
RELIABLE SUPPORT WARRANTY - Backed by 1-year replacement and permanent technical support, ensuring your investment stays protected and productive.
CROSS PLATFORM COMPATIBILITY - Works effortlessly with Windows 7/8/10, Linux, and Mac OS, making it the go-to tool for diverse development environments.

The DSD TECH SH-U09C2 USB to TTL Adapter features a built-in original FTDI FT232RL IC, supporting switchable 5V, 3.3V, and 1.8V logic levels. Encased in a transparent protective shell, it prevents static and short circuits. Compatible across Windows, Linux, and Mac OS, it’s ideal for debugging, programming, and interfacing with devices like ESP8266, GPS modules, and routers. Comes with 1-year warranty and dedicated technical support.

Specifications

ASIN	B07TXVRQ7V
Best Sellers Rank	#27 in Serial Adapters
Brand	DSD TECH
Color	Multicoloured
Compatible Devices	Hard Drive, Laptop
Connector Type	USB Type A
Current Rating	1 A
Customer Reviews	4.8 4.8 out of 5 stars (916)
Finish	Plastic
Input Voltage	5 volts
Item Dimensions	1.5 x 0.4 x 0.15 inches
Item Weight	5.67 g
Manufacturer	DSD TECH
Mfr Part Number	SH-U09C2
Model Number	SH-U09C2
Number of Items	1
Number of Ports	1
Package Quantity	1
Power Plug Type	No Plug
Specific Uses For Product	Programmierung, Debugging, EEPROM, Router, ESP8266 Modul, GPS-Module, Firmware auf Festplatte, Sender, Set-Top-Box
UPC	734678383287
Unit Count	1 Count
Warranty Description	1 year warranty
Warranty Type	12 months warranty.if

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