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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Model:SH-U09C2

Product ID: 253816835

Details

Colour
Multicoloured
Compatible devices
Hard Drive
Connector type
USB
Item dimensions L x W x H
38 x 10 x 4

⚡3Mbps max data speed

🔄Switchable 1.8V/3.3V/5V logic levels

🛡️Protective transparent static-shield case

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Description

🔌 Plug into precision: The pro’s choice for seamless serial debugging!

ROBUST FTDI FT 232 RL CORE - Powered by the original FTDI chip ensuring rock-solid, reliable USB-to-TTL communication.
TRUSTED SUPPORT WARRANTY - Backed by a 12-month warranty and responsive 24-hour customer care for zero downtime.
CROSS PLATFORM COMPATIBILITY - Effortlessly integrates with Windows, Mac, and Linux systems—code and debug anywhere.
CRYSTAL CLEAR PROTECTIVE SHELL - Transparent casing guards against static and shorts while letting you visually monitor LED activity.
UNIVERSAL LOGIC VOLTAGE FLEXIBILITY - Seamlessly toggle between 1.8V, 3.3V, and 5V TTL levels for ultimate device compatibility.

The DSD TECH SH-U09C2 USB to TTL Adapter features the original FTDI FT232RL chip, supporting ultra-flexible 1.8V, 3.3V, and 5V logic levels switchable via jumper. Encased in a transparent protective shell to prevent static and shorts, it delivers up to 3Mbps data speed and broad OS compatibility (Windows, Mac, Linux). Ideal for programmers and hardware engineers, it supports EEPROM programming, router unbricking, ESP8266 flashing, and more, all backed by a 1-year warranty and responsive support.

Specifications

ASIN	B07TXVRQ7V
Best Sellers Rank	#11,521 in Computers ( See Top 100 in Computers ) #21 in Serial Adapters
Brand	DSD TECH
Color	Multicoloured
Compatible Devices	Hard Drive, Laptop
Connector Type	USB
Country of Origin	China
Current Rating	1 Amps
Customer Reviews	4.8 4.8 out of 5 stars (901)
Finish	Plastic
Input Voltage	5 Volts
Item Dimensions	38 x 10 x 4 millimeters
Item Weight	0.2 Ounces
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	Programming, Debugging, EEPROM, Router, ESP8266 Module, GPS Modules, Firmware on Hard Drive, Transmitter, Set Top Box
UPC	734678383287
Unit Count	1 Count
Warranty Description	1-year warranty
Warranty Type	Limited

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VT4123

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered 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 Vanuatu.

Secure transaction

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