USB Host Shield Library, For Connecing Other USB Devices
PCがなくても大丈夫 スマホに直接アクセスできる『USB OTG』とは|KDDI トビラ
emPower-USB-Host board
SparkFun USB Host Shield - DEV-09947 - SparkFun Electronics
emPower-USB-Host:エンビテックSHOP
USB Host Controller Board V2.4
Usb Host Shield 2.0 Support Google Adk+uno R3 Atmega16u2+mega328p Chip Development Board For Arduino With Usb Cable - Accessory Bundles & Sets - AliExpress
組込みUSBホスト・ドライバ GR-USB/HOST|株式会社グレープシステム
USB Host Board
USB ホストシールド(USB Host Shield)
Startech.com Micro USB B Male to USB 2.0 Host OTG Female Adapter - Black - USB StarTech.com on LDLC
USB Host Cable - Pimoroni
Cheap USB Host Microcontroller [CH559, ESP32, HID] - YouTube