DSD TECH SH-U09A1 USB to TTL Adapter Support 1.8V 2.5V 3.3V 5V Logic Level

Used this to upload custom firmware OpenWRT to a Linksys EA7500 router using 1.8V TTL logic, worked great!

This item works as described, was a good price and arrived quickly. I’d buy again!

I like it. I mistakenly thought I was buying an FTDI based part, but this uses SI labs. Had to find and install the driver, no problem the. The web page clearly indicates it is Si-labs based. Where I work we are using low power micros and the 1.8v option is great. I like the little extender cable. Lowering rating slightly simply because it could use some type of extender cable, otherwise I have to have the device plugged directly into computer or hub. It works great, just a bit tricky to use physically.

I'm going to sound like a fanboy but I really love the DSD Tech USB to Serial adapters. I have lots of devices that I need serial for. Raspberry Pi's, IchigoJam's and a myriad other devices and earlier this year I bought one of their FTDI based adapters and loved it unfortunately i've started using a chromebook recently and ChromeOS's linux container doesn't like real FTDI devices but does support CP2102 ones so ordered this one and i am really happy with it. it works well on ChromeOS, Linux, Raspberry Pi's and the fact it comes in a nice case rather than a bare board is an added bonus.really love DSD Tech stuff and they are on my recommend list for anyone looking for a USB to Serial adapter

I used it to flash Tasmota onto a KS-602S Smart Light Switch (with Tazmotizer)No problemsLove the fact that it supports multiple voltages

Works ok, but the control lines are all 3.3v levels not the setting of the power jumper. That can cause problems if the device you are connecting to expects the DTR, CTS, etc. lines to be at the voltage selected. This could be bad if the control lines try to drive a lower voltage device. One cause of the voltage mismatch is that this unit will not trigger an Arduino Pro Mini to upload because the circuit on the Pro Mini requires a full 5 V swing on DTR to trigger and this unit only does a 3.3V swing.

Supports multiple logic levels (1.8, 2.5, 3.3, 5)V so high compatibility with devices. Looks like it’s going to be long lasting recommended.

Will do business again