--- product_id: 578937347 title: "Serial Expansion Module I2C Interface, Adopt SC16IS752 UART Expansion Chip, 8-bit I/O Expansion, 2-Channel UART 8 GPIOs Expansion,Suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B" brand: "xicoolee" price: "€ 43.17" currency: EUR in_stock: true reviews_count: 1 url: https://www.desertcart.es/products/578937347-serial-expansion-module-i2c-interface-adopt-sc16is752-uart-expansion-chip store_origin: ES region: Spain --- # 2 UART serial ports Up to 16 modules chained 8 programmable GPIO pins Serial Expansion Module I2C Interface, Adopt SC16IS752 UART Expansion Chip, 8-bit I/O Expansion, 2-Channel UART 8 GPIOs Expansion,Suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B **Brand:** xicoolee **Price:** € 43.17 **Availability:** ✅ In Stock ## Summary > 🚀 Unlock limitless serial expansion — because your Pi deserves more ports! ## Quick Answers - **What is this?** Serial Expansion Module I2C Interface, Adopt SC16IS752 UART Expansion Chip, 8-bit I/O Expansion, 2-Channel UART 8 GPIOs Expansion,Suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B by xicoolee - **How much does it cost?** € 43.17 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/578937347-serial-expansion-module-i2c-interface-adopt-sc16is752-uart-expansion-chip) ## Best For - xicoolee enthusiasts ## Why This Product - Trusted xicoolee brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Octo-IO Powerhouse:** Add 8 versatile GPIO pins for custom control and sensor integration. - • **Scale Without Limits:** Chain up to 16 modules via adjustable I2C addresses for a massive 32 serial ports. - • **Visual Debugging Made Easy:** Onboard RX/TX LEDs provide instant status feedback to keep your projects on track. - • **Plug & Play with Raspberry Pi:** Seamlessly compatible with all Raspberry Pi Zero and 2/3/4 models for rapid prototyping. - • **Double Your Serial Connectivity:** Expand 2 full hardware flow-controlled UART ports without sacrificing GPIO pins. ## Overview The xicoolee Serial Expansion Module leverages the SC16IS752 chip to add 2 UART serial ports and 8 GPIO pins via I2C, compatible with Raspberry Pi Zero through 4B models. It supports chaining up to 16 modules for up to 32 serial ports, features onboard status LEDs, and includes starter wiring, making it an essential upgrade for advanced Pi projects requiring expanded serial communication and I/O. ## Description Overview: Intended for Raspberry Pi 40P connector design, suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B, using SC16IS752 chip solution, it can expand two serial ports and 8 GPIOs at the same time. Specifications: Dimensions: 65mm(Length)*30.5mm(Width) Supply voltage: 3.3V or 5V Logic Voltage：3.3V PWM Driver Chip: SC16IS752 Interface Protocol：I2C Package contents: 1.Serial Expansion Module×1 2.PH2.54mm 16Pin wire x2 Review: This is a smart board that you can add to your raspberry PI (or other dev boards that have the raspberry pi 40 pin header or via the i2c header connection) in seconds. It adds 2 serial ports with full hardware flow control along with 8 general use GPIO pins all driven via the I2C interface and driver software which can be found for multiple boards searching google/github Like other expansion boards this board allows you to select the I2C address the board will respond to as well as allowing multiple boards to be mounted on top of each other via the header passthrough allowing you to expand the number of serial ports & IO pins for use in your projects Also included in the package are some header wires for getting started , 12 male to female and 12 female to female connectors. Do note that by detail the board does not include the headers for the I2C interface or GPIO so you will need to solder on some header pins or solder wires directly to the holes on the board. The board also has handy led's on the RX/TX pins for each serial port giving a quick visual guide if things are working properly. Great board if you need extra hardware serial ports on your projects. ## Features - 1.Onboard SC16IS752, can expand 2 serial ports and 8 programmable IO through I2C, does not occupy extra pins - 2.By changing the address jumper, up to 16 modules can be connected at the same time, that is, 32 serial ports can be expanded； - 3.Multiple onboard indicators, easy to check the working status of the extended serial port； - 4.Reserve I2C control interface for easy access to other main control boards. - 5.Suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BKK9SZSK | | Manufacturer | XICOOLEE | | Package Dimensions | 11.48 x 6.99 x 3.99 cm; 99.79 g | ## Product Details - **Brand:** xicoolee - **Connectivity technology:** I2C - **Included components:** Serial Expansion Module, PH2.54mm 16Pin wire x2 - **Model name:** Raspberry Pi - **Operating system:** Linux ## Images ![Serial Expansion Module I2C Interface, Adopt SC16IS752 UART Expansion Chip, 8-bit I/O Expansion, 2-Channel UART 8 GPIOs Expansion,Suitable for Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B - Image 1](https://m.media-amazon.com/images/I/81T3dLS3LhL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***M on 11 January 2026* This is a smart board that you can add to your raspberry PI (or other dev boards that have the raspberry pi 40 pin header or via the i2c header connection) in seconds. It adds 2 serial ports with full hardware flow control along with 8 general use GPIO pins all driven via the I2C interface and driver software which can be found for multiple boards searching google/github Like other expansion boards this board allows you to select the I2C address the board will respond to as well as allowing multiple boards to be mounted on top of each other via the header passthrough allowing you to expand the number of serial ports & IO pins for use in your projects Also included in the package are some header wires for getting started , 12 male to female and 12 female to female connectors. Do note that by detail the board does not include the headers for the I2C interface or GPIO so you will need to solder on some header pins or solder wires directly to the holes on the board. The board also has handy led's on the RX/TX pins for each serial port giving a quick visual guide if things are working properly. Great board if you need extra hardware serial ports on your projects. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.es/products/578937347-serial-expansion-module-i2c-interface-adopt-sc16is752-uart-expansion-chip](https://www.desertcart.es/products/578937347-serial-expansion-module-i2c-interface-adopt-sc16is752-uart-expansion-chip) --- *Product available on Desertcart Spain* *Store origin: ES* *Last updated: 2026-05-25*