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

⚡1A current rating for stable power

🔄Switchable 5V/3.3V/1.8V logic levels

🛡️Transparent protective anti-static case

฿1603

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Description

🔌 Power your projects with precision and protection!

TRUSTED SUPPORT WARRANTY - Backed by 1-year replacement and permanent technical support to keep you coding worry-free.
COMPACT PROTECTIVE DESIGN - Slim 1.5-inch form factor with a transparent case guards against static and shorts.
ROBUST FTDI FT 232 RL CHIPSET - Built-in original FTDI IC ensures reliable, high-speed USB to TTL communication.
CROSS PLATFORM COMPATIBILITY - Seamlessly works with Windows, Linux, and Mac OS for versatile debugging and programming.
UNIVERSAL LOGIC LEVEL FLEXIBILITY - Easily toggle between 5V, 3.3V, and 1.8V TTL levels to match any project needs.

The DSD TECH SH-U09C2 USB to TTL Adapter features the original FTDI FT232RL IC, supporting switchable 5V, 3.3V, and 1.8V logic levels. Its compact design includes a transparent protective case to prevent static interference and shorts. Compatible across Windows, Linux, and Mac OS, it’s ideal for debugging, programming ESP8266 modules, flashing firmware, and more. With a 1A current rating and backed by a 1-year warranty plus permanent tech support, it’s a reliable tool for professional developers and makers alike.

Specifications

ASIN	B07TXVRQ7V
Best Sellers Rank	#22 in Serial Adapters
Brand	DSD TECH
Color	Multicoloured
Compatible Devices	Hard Drive, Laptop
Connector Type	USB Type A
Current Rating	1 Amps
Customer Reviews	4.8 out of 5 stars 909 Reviews
Finish	Plastic
Input Voltage	5 Volts
Item Dimensions	1.5 x 0.4 x 0.15 inches
Item Weight	0.2 Ounces
Item dimensions L x W x H	1.5 x 0.4 x 0.15 inches
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
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Programmierung, Debugging, EEPROM, Router, ESP8266 Modul, GPS-Module, Firmware auf Festplatte, Sender, Set-Top-Box Specific Uses For Product Programmierung, Debugging, EEPROM, Router, ESP8266 Modul, GPS-Module, Firmware auf Festplatte, Sender, Set-Top-Box See more
UPC	734678383287
Unit Count	1.0 Count
Warranty Description	1 year warranty
Warranty Type	12 months warranty.if

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฿1603

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Thailand.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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