---
product_id: 323041249
title: "Teensy 4.1 (Without Pins) Developer Pack"
brand: "pjrc"
price: "€ 106.26"
currency: EUR
in_stock: true
reviews_count: 7
category: "Pjrc"
url: https://www.desertcart.be/products/323041249-teensy-4-1-without-pins-developer-pack
store_origin: BE
region: Belgium
---

# 600 MHz ARM Cortex CPU 10/100 Mbit Ethernet PHY 8 MB QSPI Flash + PSRAM Teensy 4.1 (Without Pins) Developer Pack

**Brand:** pjrc
**Price:** € 106.26
**Availability:** ✅ In Stock

## Summary

> 🚀 Supercharge your DIY with Teensy 4.1’s ultimate dev pack!

## Quick Answers

- **What is this?** Teensy 4.1 (Without Pins) Developer Pack by pjrc
- **How much does it cost?** € 106.26 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/323041249-teensy-4-1-without-pins-developer-pack)

## Best For

- pjrc enthusiasts

## Why This Product

- Trusted pjrc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Ethernet:** Integrated 10/100 Mbit DP83825 PHY for instant network connectivity.
- • **Versatile I/O Arsenal:** 55 total pins including 35 PWM and 18 analog inputs to fuel complex builds.
- • **Blazing Fast Processing:** 600 MHz ARM Cortex A-9 powers your next-gen projects with lightning speed.
- • **Massive Memory Expansion:** Dual PSRAM chips plus 8 MB flash for seamless multitasking and data handling.
- • **Breadboard Friendly Design:** 42 I/O pins perfectly spaced for rapid prototyping and innovation.

## Overview

The Teensy 4.1 Developer Pack (without pins) equips makers with two PSRAM chips and an Ethernet kit, enhancing the powerful Teensy 4.1 board’s capabilities. Featuring a 600 MHz ARM Cortex A-9 CPU, 8 MB flash memory, and extensive I/O options, this pack is designed for advanced prototyping and networked embedded projects. Note: The Teensy 4.1 board itself is not included.

## Description

Technical Specifications - 10/100 Mbit DP83825 PHY Ethernet - USB Host (5 Pins w/ Power Management) - Micro SD Socket SDIO (4 Bit Data) - 35 PWM Pins - 18 Analog Inputs - 8 Serial Ports - 8 Mbyte Flash Memory - QSPI Memory (2 Chips Plus Program Memory) - 42 Breadboard Friendly I/O - 7 Bottom SMT Pad Signals - 6 SD Card Signals - 55 Total IO Pins

Review: Great Buy - great buy. came with all the stuff, except one missing 2x3 header. buuut that's fine. the chips are legitimate, and it matches uncannily with the product images. works totally fine.
Review: Does NOT Come With Teensy - This is ONLY the Ethernet kit and PSRAM chips. NO TEENSY IS INCLUDED. The product is priced as if it includes a Teensy but it does not. The listing shows all the Teensy specs in the product specifications and lists it right above the included items but it is not a part of the deal. Nowhere do they specify that the Teensy is not included which is highly deceptive. This review is not a reflection of the Teensy 4.1 dev board itself but this specific scam listing.

## Features

- Teensy 4.1 (Without Pins)
- Includes two (2) PSRAM Chips and one (1) Ethernet Kit for Teensy 4.1

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08P4BZPFH |
| Best Sellers Rank | #1,901 in Single Board Computers (Computers & Accessories) |
| Brand | PJRC |
| Built-In Media | Teensy 4.1 board, two PSRAM chips, one Ethernet kit for Teensy 4.1 |
| CPU Model | ARM Cortex A-9 |
| Compatible Devices | Personal Computer |
| Connectivity Technology | Ethernet, USB |
| Customer Reviews | 3.4 3.4 out of 5 stars (20) |
| Manufacturer | PJRC |
| Memory Storage Capacity | 8 MB |
| Mfr Part Number | TEENSY41_DP |
| Model Name | 4.1 |
| Model Number | TEENSY41_DP |
| Operating System | Linux |
| Processor Brand | ARM |
| Processor Count | 1 |
| Processor Speed | 600 MHz |
| RAM Memory Technology | PSRAM |
| Total Usb Ports | 5 |
| UPC | 752785954527 |
| Unit Count | 4.0 Count |

## Product Details

- **Brand:** PJRC
- **CPU Model:** ARM Cortex A-9
- **CPU Speed:** 600 MHz
- **Memory Storage Capacity:** 8 MB
- **Model Name:** 4.1

## Images

![Teensy 4.1 (Without Pins) Developer Pack - Image 1](https://m.media-amazon.com/images/I/81uCn4qtr5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Buy
*by A***R on June 7, 2025*

great buy. came with all the stuff, except one missing 2x3 header. buuut that's fine. the chips are legitimate, and it matches uncannily with the product images. works totally fine.

### ⭐ Does NOT Come With Teensy
*by W***M on March 23, 2026*

This is ONLY the Ethernet kit and PSRAM chips. NO TEENSY IS INCLUDED. The product is priced as if it includes a Teensy but it does not. The listing shows all the Teensy specs in the product specifications and lists it right above the included items but it is not a part of the deal. Nowhere do they specify that the Teensy is not included which is highly deceptive. This review is not a reflection of the Teensy 4.1 dev board itself but this specific scam listing.

### ⭐⭐⭐⭐⭐ Great product really top notch
*by A***N on October 15, 2021*

I am using it for projects and it's really powerful

## Frequently Bought Together

- Teensy 4.1 (Without Pins) Developer Pack
- Treedix Breakout Board Module with Pin Board for Teensy 4.1/3.5/3.6 Compatible with Arduino
- MCIGICM 10pcs Male Header Pin, 40 Pin Header Strip (2.54 mm) for Arduino Connector

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-05-27*