10-Pack AMS1117-3.3 Module DC/DC Step-Down Voltage Regulator Adapter Convertor 3.3V Out

Excellent value, and much faster free delivery than ordering direct from China.The items I received differ slightly from the photos in the description, in that there no mounting holes in the PCB. However it appears to function well, albeit that I have not yet been able to carry out any long term tests.The mounting headers project above the PCB, rather than below it, which means it cannot be mounted on a breadboard, unless mounted upside down, which then obscures the pin descriptions, and the Led. I cured this by replacing the standard header pins with 20mm pins, (see photos of original and modified) which then allowed me to plug it into a breadboard, whilst still allowing dupont sockets to be connected to the top of the module

These work very well and should be given 5 stars but ...1. They lose one star because the pins are soldered upwards. I generally want to use these on pcbs or breadboards which means they have to be mounted component side down (so can't see the LEDs!). I've destroyed two already in trying to unsolder the connector pins!2. They lose one more star because of the overly grandiose and inaccurate description of being a "DC/DC Step Down Adapter Converter", whereas they are merely cheap linear regulators rather than being any type of dc-dc converter.DC-DC Converters are totally different to linear regulators. I hope, though I doubt, that Amazon will take issue with the advertiser about this - if only from the perspective of Honesty.