Not real familiar with these devices yet; is there any difference between this, where it says "for arduino" and perhaps one for a raspberry pi? I have a Pi and just want to confirm whether I need to find one specific for Pi?

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I messaged the seller this question and this is the response I got (lol):

I apologize, we are unable to check this.

My assumption is they're usable on both since it's just "colored wires", but want to make sure before I wait 7 years to get one of these sent from China. ;)

Update: Including a link to the device page, in case it provides more useful specs - https://x.geekdrop.com/3BfNVfQ

2 Answers 2


If you look into the datasheet of the converter chip (PL2303HX), you will see it's a 3.3V device with 5V tolerant inputs. It is therefore suitable for both Arduino and the Pi.


If the vendor doesn't know how to works and can't supply a data sheet we can't know either.

Pi peripherals NEED to work @ 3.3V and isn't TTL (but then most of these devices aren't TTL either).

  • I thought that a bit strange myself; the seller has over 16K feedback but can't tell me about his own product. Maybe hoping I'll just take the gamble and buy it anyway. Commented Oct 25, 2021 at 23:08
  • Also, not sure what ya mean by Pi periphs need to NOT be TTL? Or am I reading that wrong? I'm wanting to follow this guide: ipcamtalk.com/threads/… and it says not to use RS232 because it's 12v? Commented Oct 25, 2021 at 23:12
  • I just updated the OP with a link to the device, in case it provides any useful tech info. Commented Oct 25, 2021 at 23:26
  • @J.ScottElblein TTL is a 5V current driven interface. The Pi and most devices, almost certainly including the adapter are CMOS - voltage driven; actual levels vary, but are a percentage of supply voltage. I didn't bother to point out that the adapter isn't RS232 which is strictly ±15V bipolar with inverted levels.
    – Milliways
    Commented Oct 25, 2021 at 23:26

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