Check the listing for details. Teensy 4.1 ARM Cortex-M7 Microcontroller Development Board w/ & w/o Ethernet. Condition: New. Listed at 34.60 USD. Teensy 4.1 iMXRT1062 Microcontroller Development Board by PJRC With and Without Ethernet OptionNOTE: Due to shortages and price increases on the Ethernet PHY chip, the Teensy 4.1 microcontroller is now being offered both with and without Ethernet capability. The type (with or without the Ethernet chip on the board) can be chosen at checkout. Teensy 4.1 is the latest Teensy microcontroller development board from PJRC. It features an ARM Cortex-M7 IMXRT1062 processor at 600 MHz. The actual size is 2.4 by 0.7 inch, the same form-factor as Teensy 3.6.Teensy 4.1 uses the same processor as Teensy 4.0, but provides greater I/O capability, including an ethernet PHY, SD card socket, and USB host port. Teensy 4.1 also comes with 4X larger flash memory, and has 2 locations to optionally add more memory.Technical Specifications compared to Teensy 4.0Teensy 4.1 & 4.0 use the same IMXRT1062, so most technical specifications are the same.Please refer to the Teensy 4.0 listing for common specifications and features.FeatureTeensy 4.1Teensy 4.0Ethernet10 / 100 Mbit DP83825 PHY (6 pins) ("With Ethernet" version only)-none-USB Host5 Pins with power management2 SMT PadsSDIO (4 bit data)Micro SD Socket8 SMT PadsPWM Pins3531Analog Inputs1814Serial Ports87Flash Memory8 Mbyte2 MbyteQSPI Memory2 chips Plus Program MemoryProgram memory onlyBreadboard Friendly I/O4224Bottom SMT Pad Signals716SD Card Signals60Total I/O Pins5540PinoutsTeensy 4.1 is designed to bring all general purpose I/O pins to breadboard friendly pads on the outside edges.Note: The Teensy 4.1 does not include headers and, if needed in your application, will need to be purchased separately and soldered on yourself.Package Includes: 1X PJRC Teensy 4.1 Microcontroller Development Board without pins - With or Without the Ethernet Option chosen at checkout Printed pinout and usage reference cardWe also offer the Teensy 4.1 with an Ethernet Kit that has all the parts needed to connect to the Ethernet port on the Teensy 4.1 here: Teensy 4.1 iMXRT1062 Microcontroller Development Board with Ethernet Kit.Envistia Mall is an authorized PJRC Teensy distributor. Get it faster! Stocks and ships from our US Colorado office for quick delivery.We provide FREE USPS First Class Shipping with Tracking - Not Economy Shipping