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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.<br />
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== Summary ==<br />
The PL2303 USB-to-UART (TTL) communication module (V2) converts USB to a serial interface and supports 1.8 V, 2.5 V, 3.3 V and 5 V logic levels via jumper settings. It uses the newer PL2303GS chip, provides three status LEDs (TXD, RXD, PWR), and is compatible with Windows XP/7/8/10/11.<br />
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== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL20265 WSAL20265 – PL2303 USB To UART (TTL) Communication Module, Micro / Mini / Type A / Type C Connector]<br />
* [https://shop.jw-tech.eu/p/WSAL20645 WSAL20645 – PL2303 USB To UART (TTL) Communication Module, Micro / Mini / Type A / Type C Connector]<br />
* [https://shop.jw-tech.eu/p/WSAL24680 WSAL24680 – PL2303 USB To UART (TTL) Communication Module, Micro / Mini / Type A / Type C Connector]<br />
* [https://shop.jw-tech.eu/p/WSAL24681 WSAL24681 – PL2303 USB To UART (TTL) Communication Module, Micro / Mini / Type A / Type C Connector]<br />
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== Technical overview ==<br />
* Chipset: PL2303GS (newer revision of PL2303).<br />
* Interfaces: USB on the host side, UART (TTL) on the device side.<br />
* USB supply voltage: 5 V.<br />
* Selectable UART logic levels: 1.8 V / 2.5 V / 3.3 V / 5 V via jumpers.<br />
* VCCIO jumper modes: 5 V external power; 3.3 V external power; without jumper cap, powered by an external supply.<br />
* Board dimensions: 16.51 mm × 48.26 mm.<br />
* Three onboard LEDs: TXD, RXD, PWR.<br />
* Supported operating systems: Windows XP, 7, 8, 10, 11.<br />
* Available resources: schematic, drivers (Windows/Linux), Serial Debugging Assistant, PuTTY, PL2303 driver program.<br />
* Available datasheets: PL2303, PL2303TA, PL2303GS.<br />
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== Notes and version constraints ==<br />
* No commands are specified in the source document – no exact commands derived.<br />
* Exact jumper positions for each mode are not detailed; consult the original schematic before changing jumpers.<br />
* Linux drivers must be installed manually; the document only lists “PL2303G Linux driver” without installation instructions.<br />
* No warranty, certification, or pricing information is present – no assumptions made.<br />
* Version-sensitive steps (e.g., exact jumper configuration) require human confirmation against the current schematic.<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/PL2303_USB_UART_Board_V2 PL2303 USB UART Board V2 - Waveshare Wiki]<br />
* Source revision: 90291<br />
* Captured: 2026-09-02T03:36:59+00:00<br />
* SHA-256: <code>94a4dcf97d3426e395eaf832dac80b2da15f1628343ed9ab6e9caf18bf63751b</code></div>JWTechPublisher