RFduino - USB Shield - DEV-13209 - SparkFun Electronics
Amazon.com: ARCELI USB Host Shield for Arduino UNO MEGA 2560 Support Google Android ADK USB HUB : Electronics
USB Host Shield for Arduino Compatible with Google Android ADK UNO MAX3421E | eBay
Amazon.com: HiLetgo 2.0 ADK Mini USB Host Shield SLR Development Tool Compatible SPI Interface For Arduino : Electronics
USB Host Shield |Rubiks Tech
Arduino USB Host Shield 2.0 ADK Shield
Shield USB 6.0 Portable CO Detector - With iOS App - White
ArduCAM USB3.0 Camera Shield Plus
Amazon.com: HiLetgo USB Host Shield for Arduino UNO Support Google Android ADK USB HUB : Electronics
USB Host Shield 2.0 for Arduino Uno R3
USB 2.0 Cable - A-Male to B-Male for ESP8266 Web Server Serial Port WiFi Shield Expansion Board ESP-13 (Specific Models Only) - 10 FT/10 PACK/CLEAR - Walmart.com
DataK9 USB Shield / Data Blocker (Condom Or Syncstop | EverythingBranded USA
arduino - How to correctly connect a USB shield on a PCB - Electrical Engineering Stack Exchange