DC-DC 5V to 3V 3.3V 4.2V 12V USB Buck Boost Power Supply Voltage Regulator Modul Sale - Banggood USA
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Micro USB to 5V to 3.3V AMS1117 3.3V regulated power supply module USB to 3.3V module|module ams1117|module 5vmodule usb - AliExpress
/i/691481/products/2019-11-26T15%3A59%3A01.155Z-usb-uart-single.jpg?1606306133 "FTDI FT230XS USB UART 5V / 3.3V from IndoPaLTa on Tindie")
FTDI FT230XS USB UART 5V / 3.3V from IndoPaLTa on Tindie
SparkFun Breadboard Power Supply USB - 5V/3.3V - PRT-08376 - SparkFun Electronics
Amazon.com: FTDI chip USB to 3.3v TTL UART Serial Cable, Wire end, 6ft, TTL-232R-3V3-WE Compatible : Electronics
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soc - How to use an USB port with 3.3v power output? - Electrical Engineering Stack Exchange
![2p USB DC 5V to 3.3V DC/DC Step-Down Converter Power Supply Module AMS1117- 3.3V [CE009*2] - USD $1.99 : canton-electronics.com](http://i1381.photobucket.com/albums/ah211/canton-electronics1/CE009_8_zps114bb754.jpg "2p USB DC 5V to 3.3V DC/DC Step-Down Converter Power Supply Module AMS1117- 3.3V [CE009*2] - USD $1.99 : canton-electronics.com")
2p USB DC 5V to 3.3V DC/DC Step-Down Converter Power Supply Module AMS1117- 3.3V [CE009*2] - USD $1.99 : canton-electronics.com
When 3.3v isn't actually 3.3v: USB to Serial adapters - YouTube
Step-Down Module, CE009 5V to 3.3V DC-DC USB Power Supply Module Step-Down Buck Converter Module : Electronics
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Amazon.com: CE009 Step-Down Module USB Power Supply 5V to 3.3V DC-DC Buck Converter Module for Raspberry Pi/Esp8266 : Electronics
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5P USB ( 5V input ) ( 3.3V output ) AMS1117 Voltage Regulator Power Supply DC-DC | eBay
USB to 3.3V/5V Serial UART TTL Auto Sensing Adapter
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