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Prototyping > Data Converters

USB to TTL Serial UART RS232 Adaptor (PL2303)

SKU: 018-USB-PL2303HX

$5.54 AUD, inc GST
$5.04 AUD, exc GST
USB to TTL Serial UART RS232 Adaptor (PL2303)
5.54 AUD

SKU: 018-USB-PL2303HX

$5.54 AUD, inc GST
$5.04 AUD, exc GST
17 reviews 0 5 4.9
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  • $6.95 Standard (2-4 days, tracked)
  • $9.95 Express (Overnight*, tracked)
  • $3 Economy Post* (3-7 days, no tracking)
  • FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

USB to TTL converters are an essential for prototyping - they provide a direct interface with the target device. This module connects to your computer USB port and there are 4 wires which connect with your target device.


  • Fully enclosed professional finish.
  • Built-in PL2303 USB to Serial Controller
  • Designed to be used for USB to TTL electronic projects
  • TTL interface output, easy to connect to your MCU
  • Dual 3.3V and 5V Power output (by Changing the red wire termination)
  • Can independantly power the circuit with 5V or 3.3V
  • Compact design


  • Red - power. This pin provides up to 500mA current. YOU MUST NOT use other power supplies if you choose to power the target device with this Adaptor.
  • Black - ground (always needed, regardless if the Adaptor is powering the target device or not)
  • White RX (3.3V / 5V)
  • Green TX (3.3V / 5V)

3.3V and 5V Selection:

Open the plastic case (twist the USB connector and then evenly pull apart the plastic case) and change the red wire termination from the pad marked 5V or 3V3.


Supports the following Windows OSes:

  • Windows 98SE
  • Windows ME
  • Windows 2000 SP4
  • Windows XP SP2 and above (32 & 64 bit)
  • Windows Server 2003 (32 & 64 bit)
  • Windows Server 2008 / 2008 R2 (32 & 64 bit)
  • Windows Vista (32 & 64 bit)
  • Windows 7 (32 & 64 bit)
  • NOTE: For Windows 7, please use RC build 7100 or above.

This product is listed in:

Documentation and Resources:

Product Comments

Customer Reviews

  1. Review by Jon verified purchaser

    Works great. Requires a soldering iron to change from 5v to 3.3v. (Posted on 15/11/2018)

  2. Review by Priyanga verified purchaser

    The USB to TTL Serial device worked a treat. Helped me de-brick my Netgear R7000 router!

    Great to find high quality parts locally at a reasonable price! (Posted on 16/10/2018)

  3. Review by Gurce verified purchaser

    I needed this part for making a mod to the c64 mini, did the job just fine. For other c64 mini users considering the same path, remember to open up the casing and resolder the power line from 5v to 3.3v (Posted on 14/08/2018)

  4. Review by Carmelo verified purchaser

    The item arrived well packaged. And it seems it is a good quality cable. It used 28AWG wires and it is 3 feet long! which is really nice. I was able to disassemble the plug to see the chip and the circuit board inside it, And I have to say that it has a good FT232BL chipset. If you needed a 3V breakout board cable in the future, you can just solder these points together and disconnect the 5V! (Posted on 29/05/2018)

  5. Review by Peter verified purchaser

    Contained PL2303TA chip. Easy to find driver.
    Worked with Windows 10. (Posted on 27/03/2018)

  6. Review by David verified purchaser

    As always, Core are selling a great product at a great price (Posted on 4/11/2017)

  7. Review by Mark verified purchaser

    I am very happy with this product as it has enabled me to program my Nextion screen and also my RC controller. (Posted on 13/10/2017)

  8. Review by Chris verified purchaser

    worked fine with ubuntu 16.04 linux, no need to find drivers. (Posted on 5/09/2017)

  9. Review by Peter verified purchaser

    Works as expected, arrived promptly (Posted on 4/07/2017)

  10. Review by Aidan verified purchaser

    I managed to fix my router without needing a serial connection, but the cable arrived as expected and I'm sure will help save me some time in the future! (Posted on 6/03/2017)

  11. Review by Terrence verified purchaser

    This cable is simple, efficient and with the flying leads can be used for many applications, an excellent product all round. (Posted on 28/11/2016)

  12. Review by Shane verified purchaser

    Works well :) (Posted on 4/10/2016)

  13. Review by Maayan verified purchaser

    Works great. I'm using Linux Ubuntu so its compatible with it too. (Posted on 15/04/2016)

  14. Review by Vincent verified purchaser

    Perfect, exactly what I needed. Delivery only took a few days, much better than ordering from overseas Ebay seller. Recommended. (Posted on 7/02/2016)

  15. Review by Sean - Did what it was supposed to do verified purchaser

    The cable worked first time. Price was also very competitive. (Posted on 25/04/2015)

  16. Review by Peter - Great value verified purchaser

    Works well on Win7 and XP. Used it as terminal interface connector to an Atmel controller with lower speed (19.6kBd). The 5V/3.2V option makes it really versatile. The USB enclosure is a little bulky compared to moulded FTDI cables but the voltage selection option and price make up for that. (Posted on 6/07/2014)

  17. Review by Daniel87 - Great product! verified purchaser

    It works really nice on windows 7. I used it in a project with Atmel microcontrollers. I really appreciate it because in the past, I had to conect a usb/RS232 adapter and then use a max232 to get TTL levels. It was about 26 dollars. Now for only 4.20, I got a much smaller and nicer solution. Believe me, it's worth it.
    However, I couldn't get it working on windows 8. (Posted on 21/09/2013)

Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

  • $3 for Small Items (3-7 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $9.95 for Express Post (Overnight for most of Australia, 2+ days for rural, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
NSW, 2289

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!