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https://www.sparkfun.com/teensy-4-1.html
Teensy 4.1 | For Sale at SparkFun Electronics - SparkFun Electronics
The Teensy 4.1 delivers 600MHz ARM Cortex-M7 processing power in a larger form factor, featuring 8MB flash, Ethernet, a microSD socket, and a USB host port.
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https://www.sparkfun.com/teensy-4-1-headers.html
Teensy 4.1 (Headers) | For Sale at SparkFun Electronics - SparkFun Electronics
The Teensy 4.1 (Headers) combines the 600MHz ARM Cortex-M7, 8MB flash, Ethernet, and microSD socket with pre-soldered header pins for immediate prototyping.
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https://www.sparkfun.com/ethernet-kit-for-teensy-4-1.html
Ethernet Kit for Teensy 4.1 | SparkFun Electronics - SparkFun Electronics
The Ethernet Kit for Teensy 4.1 is a DIY soldering kit that provides the MagJack and all required parts to add a wired network connection to your Teensy 4.1.
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https://www.sparkfun.com/teensy-4-1-without-ethernet.html
Teensy 4.1 without Ethernet | Available at SparkFun - SparkFun Electronics
The Teensy 4.1 without Ethernet features, features the 600MHz ARM Cortex-M7, 8MB flash, a microSD socket, and a USB host port in a streamlined version.
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https://www.sparkfun.com/teensy-4-1-without-ethernet-headers.html
Teensy 4.1 without Ethernet (Headers) | SparkFun Electronics - SparkFun Electronics
The Teensy 4.1 without Ethernet (Headers) combines the 600MHz ARM Cortex-M7, 8MB flash, and microSD socket with pre-soldered header pins for prototyping.
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https://www.sparkfun.com/teensy-4-1-with-copy-protection.html
Teensy 4.1, Lockable | For Sale at SparkFun Electronics - SparkFun Electronics
The Teensy 4.1, Lockable, delivers the 600MHz ARM Cortex-M7, 8MB flash, Ethernet, and microSD socket, and programmable fuse for permanent code security.
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