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

Wasted hours trying to use an arduino to flash tosmota on a Sonoff device (had worked before), this worked the first time. The device appears well made and it worked immediately, also no drivers required for Windows 10.

Very nice self-contained FTDI programmer. What else can I say? You download the driver, you plug it in, and it works. :-)

I liked the ease of operation

One of the nicest USB<->TTLserial adapters Ive seen. Solid FTDI 245RL silicon and level shifters for 1.8 (!), 3.3, and 5V. Helped me to debug an issue with a development board. Thanks for a great product, DSD TECH. I ordered two more...

This seems to be a legit FTDI chip. It passes the checks by the FTDI programming software.

Works perfectly with a Nextion 3.2” display. Don’t usually need products like these so can’t say for sure but it seems like a great value for a little more that $10

Using this to program my Arduino. It looks solidly built, I like that it has a 3.3 and 5V option. While not the cheapest of these serial modules, it looks like a high quality and the couple of extra dollars seem to be worth it. One thing that is really wrong with it is the wire colors. Normally youd have red for positive and black for negative. Because the ribbon cable color scheme does not correspond with the power pins, inserting the cable one way and positive is white and negative is red. Inserting the cable the other way the and positive is orange and negative is green. This is a disaster waiting to happen. Because of the color confusion and the fact that you can put the cable in either way, i deducted 1 star

Simply a cut above the typical red bare pcb ones you see in so many tutorials. Used it once so far to flash tasmota onto a knock off sonoff 4 relay board, worked great. The case, options, harness etc makes this one the ftdi adapter to get IMO.

This unit is very well made and comes in a protective see thru case. It has a jumper to select either 3v or 5v device to program. I bought it to program my esp32 camera and it worked great.

Very good quality. In my opinion, the build quality of this product is better than the 20 bucks Adafruit one. And it provides 3 voltage configurations, which allows me to debug my 1.8V boards. It comes with female to female jumper wires, no need to buy wires seperately. The only caveat is that I need to purchase a USB extension cord.