This adapter board connects Teensy 3.2 - 4.1 with up to thousands of WS2811/WS2812 (also known as NeoPixel) and compatible LEDs using the OctoWS2811 library. It features a 74HCT245 buffer chip and 100-ohm series matching resistors. A CAT6 Ethernet cable is used to connect this board to the LED strips. A CAT6 cable is designed for very high bandwidth, minimal crosstalk between twisted pairs, and 100 ohm impedance to ensure very high signal quality. external links https://www.pjrc.com/store/octo28adaptor.html Note Teensy Board not included https://elecena.pl/product/19979698/octo28-adaptor-teensy-adapter-board-octo-ws2811-teensy-neopixel 2021-12-16 https://elecena.pl/product/19979698/octo28-adaptor-teensy-adapter-board-octo-ws2811-teensy-neopixel 2022-05-13