giga add download link

Author: karlsoderby

content/hardware/10.mega/boards/giga-r1-wifi/product.md

@@ -7,3 +7,5 @@ certifications: [CE, UKCA]
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 The **GIGA R1 WiFi** is a powerful, feature-packed board with a large amount of GPIOs and dedicated connectors. Based on the [STM32H747XI](/resources/datasheets/stm32h747xi.pdf) micro based on the [Mbed OS](https://os.mbed.com/), the GIGA R1 WiFi features 76 GPIOs, a [dual core processor](/tutorials/giga-r1-wifi/giga-dual-core), [advanced ADC/DAC](/tutorials/giga-r1-wifi/giga-audio) features as well as camera & display connectors. It also has a rich [USB interface](/tutorials/giga-r1-wifi/giga-usb) with support for HID via USB-C® and USBHost (keyboard, mass storage) via a dedicated USB-A connector.
+
+To download the source file for this board, click [this link](https://content.arduino.cc/assets/ABX00063-cad-files.zip).