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Amazon.com: 4-Port Raspberry Pi USB HUB HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/Zero W, 4 USB Ports Compatible with USB2.0/1.1 Onboard USB to UART Onboard Multi Indicators : Electronics
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Amazon.com: XYGStudy Serial Expansion HAT, I2C Interface, Provides 2-ch UART and 8 GPIOs Compatible with Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+/4B : Electronics
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