Teensy 3.0 now supported by the USB Host library « Circuits@Home
Teensy 4.1 USB Microcontroller Development Board (No Pins) - RobotShop
Teensy 4.0 Minimalist USB Host Shield - Parts Not Included
little-scale: Teensy 3.6 as Standalone Mediator Between USB MIDI and Eurorack
New Teensy 4.0 Blows Away Benchmarks, Implements Self-Recovery, Returns To Smaller Form | Hackaday
Teensy 4.0 Minimalist USB Host Shield - Parts Not Included
USB Host Cable for Teensy 3.6 and Teensy 4.1
Amazon.com: SparkFun MicroMod Teensy Processor ARM Cortex-M7 Processor Clock speeds up to 600MHz 16MB Flash Memory 102k RAM Memory 7X Serial UART Ports 4X I2C Buses 2X SPI CAN-Bus 12x GPIO USB
Teensy 4.1 Development Board — ameriDroid
PJRC Store
Amazon.com: Teensy 4.0 (Without Pins)
PJRC (Teensy) Forum
Ethernet Kit for Teensy 4.1
USB Hub Bug Hunting & Lessons Learned
Teensy-4.1-usb-host | Hackaday
SunRobotics Mini USB Host Shield, Teensy LC USB, ATTINY85 USB & Mini USB Development Boards
TEENSY 4.1 H: Teensy 4.1, USB, with header at reichelt elektronik
Teensy 4.1 Board Gets Longer for Ethernet, MicroSD Slot, and More GPIOs - CNX Software
Teensy 4.1 Fully Loaded For Prototyping System - ProtoSupplies
PJRC Teensy 4.1 ARM Cortex-M7 Microcontroller Development Board – Envistia Mall
