Clock speed? Chipset?

The chipset is in the description, it is the FTDI FT232rl, it is internally clocked so there is no easy way to know what it is set to. If it helps I have personally run this unit at 115Kbps

The ESP8266 Wi-Fi chip uses 3.3 vdc. With switch set to 3.3 volts on the programmer can you directlyTx and Rx to the ESP chip without level shift?

Yes. I've been programming numerous ESP8266 versions with this. No level shifting required

Can it be powered via vcc and via usb at the same time?

While I have never done it, I only use it to program pro minis, it should be fine as long as it is under 500 mah, matches the 3.3/5v and shares the ground. I still think it would be best to program it only under USB power if possible though. At worst the fuse is tripped but that's what it is there for. If you ordered from me and do this, let me know your results. If it damages your board, please get in touch to get a no cost replacement.

Gave up. can anyone get this to work? even tried with term emulator and known=-good mcu.

I found these only sort ot work with usb3.0. You can read, but not write. Don't forget some coms require rx and tx to flip. Rx of ftdi to tx of device... like with uart.

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HiLetgo FT232RL Mini USB to TTL Serial Converter Adapter Module 3.3V/5.5V

HiLetgo FT232RL Mini USB to TTL Serial Converter Adapter Module 3.3V/5.5V

Product ID: 5643972

Details

Color
Red
Compatible Devices
Laptop Desktop
Connector Type
Mini USB
Item dimensions L x W x H
6 x 0.5 x 4
Specific Uses For Product
personal

⚡Supports 3.3V to 5.5V working voltage range

💡500mA self-resetting fuse for safe power handling

🔌FT232RL chipset for reliable USB-TTL conversion

$22.04

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Sold byAmazon EcuadorDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔗 Connect Smarter, Code Faster: Your Essential USB-TTL Sidekick

BROAD OS SUPPORT - Plug and play on legacy Windows systems from 95 through 7 (32/64-bit) for maximum compatibility.
COMPACT LIGHTWEIGHT - Sleek red mini USB form factor fits anywhere—ideal for on-the-go professionals and makers.
BUILT IN POWER PROTECTION - Stay worry-free with a 500mA self-restoring fuse guarding your hardware.
SEAMLESS SERIAL COMMUNICATION - Effortlessly bridge USB and TTL serial devices with the trusted FT232RL chipset.
FLEXIBLE VOLTAGE COMPATIBILITY - Operate confidently across 3.3V to 5.5V systems, perfect for diverse projects.

The HiLetgo FT232RL Mini USB to TTL Serial Converter Adapter Module is a compact, reliable interface tool designed for seamless USB to serial communication. Featuring the FT232RL chipset, it supports a flexible voltage range of 3.3V to 5.5V and includes a 500mA self-resetting fuse for enhanced safety. Compatible with a wide range of Windows operating systems (up to Windows 7), this lightweight red adapter is perfect for developers, engineers, and tech enthusiasts seeking dependable connectivity in a sleek package.

Specifications

ASIN	B00IJXZQ7C
Best Sellers Rank	#54 in Serial Adapters
Brand	HiLetgo
Color	Red
Compatible Devices	Laptop, Desktop
Connector Type	Mini USB
Current Rating	500 milliamps
Customer Reviews	4.4 4.4 out of 5 stars (1,226)
Input Voltage	5.5 volts
Item Dimensions	6 x 0.5 x 4 inches
Item Weight	0.01 kg
Manufacturer	HiLetgo
Mfr Part Number	3-01-0661-1
Model Number	3-01-0661-1
Number of Items	1
Number of Ports	1
Package Quantity	1
Power Plug Type	No Plug
Specific Uses For Product	personal
UPC	509049833148
Unit Count	1 Count

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$22.04

Duties & taxes included

In stock

Sold byAmazon EcuadorDelivered 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 Ecuador.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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