---
product_id: 381852107
title: "XCRFID UNFUSED J2A040 40k EEPROM with 2 Track Hi CO Magstripe Compatible JCOP21 36K Java JCOP Based Smart Card with SDK Kit (1PCS)"
brand: "xcrfid"
price: "S/.152"
currency: PEN
in_stock: true
reviews_count: 8
category: "Xcrfid"
url: https://www.desertcart.pe/products/381852107-xcrfid-unfused-j2a040-40k-eeprom-with-2-track-hi-co
store_origin: PE
region: Peru
---

# Hi-Co Magstripe compatible 40KB EEPROM storage JCOP 2.4.1 Java security XCRFID UNFUSED J2A040 40k EEPROM with 2 Track Hi CO Magstripe Compatible JCOP21 36K Java JCOP Based Smart Card with SDK Kit (1PCS)

**Brand:** xcrfid
**Price:** S/.152
**Availability:** ✅ In Stock

## Summary

> 💳 Unlock the future of smart card development with XCRFID’s pro-grade JCOP 40K!

## Quick Answers

- **What is this?** XCRFID UNFUSED J2A040 40k EEPROM with 2 Track Hi CO Magstripe Compatible JCOP21 36K Java JCOP Based Smart Card with SDK Kit (1PCS) by xcrfid
- **How much does it cost?** S/.152 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/381852107-xcrfid-unfused-j2a040-40k-eeprom-with-2-track-hi-co)

## Best For

- xcrfid enthusiasts

## Why This Product

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

## Key Features

- • **Printer Compatibility:** Works flawlessly with Fargo and Zebra printers for professional card issuance.
- • **Unfused & Programmable:** Comes clean and ready for professional customization—your code, your rules.
- • **Generous 40KB EEPROM Storage:** Ample memory for complex applets and secure data handling.
- • **Hi-Co Magnetic Stripe Integration:** Supports legacy magstripe systems for seamless hybrid applications.
- • **Cutting-Edge JCOP 2.4.1 Java Platform:** Leverage the latest JavaCard tech with robust encryption and fast processing.

## Overview

The XCRFID UNFUSED J2A040 is a professional-grade JavaCard featuring 40KB EEPROM memory and Hi-Co magnetic stripe compatibility. It runs on the advanced JCOP 2.4.1 platform, supporting secure, high-speed communication protocols (T=1, SCP02). Designed for expert developers, this unfused card arrives uninitialized, allowing full customization and applet deployment. Compatible with major card printers like Fargo and Zebra, it’s ideal for cutting-edge smart card projects requiring both JavaCard security and legacy magstripe functionality.

## Description

Remark: The cards are unfused ! JCOP card only be used by the professional software engineers who know how to develop and use. So ,Before purchasing the JCOP cards, please make sure you can programming and operate the JCOP21-36 / 40K card which run the TK and ATR to work! We can only provide the TK default value (Transport key) Before you use JCOP Card,you need 2 commands for opening the JCOP21-40K card. here is : APDU:00A4040010( TK - KEY ) APDU:00F00000 ( open for Initialize ) 1, J2A040 N JAVA based smart card, 40k EEPROM With Hi-co Mag Card Brand new generation of popular JCOP cards! Arrived just now. JAVA based, JCOP 2.4.1, JC 2.2.2, GP 2.1.1., T=1, SCP02 2,JCOP is an N (IBM) implementation of the RSA JCOP V 2.3.1, T=1 and Global Platform 2.1.1 basic specifications Jcop card is a kind of Java card which need to be initiliazed then can be put applet to run. When initilizing cards, it can be run in GP V2.1.1, V2.2.1 with Jcop tools to finish the initilization. It can be made SIM die cut to fullfill the payment funtion with system, relying on the strong encryph and better speed. According to T=1 or T=0 protocol, and the S=115 200 or higher speed.

Review: Great JavaCard for Development - This UNFUSED J2A040 card worked exactly as expected. It came clean and ready to program, and I had no issues loading applets or running tests. The 40K EEPROM provides plenty of space, and the Hi-CO magnetic stripe is a nice extra for projects that still need stripe support. Compatibility was solid with my smart-card reader, and APDU communication was reliable throughout. If you're working with JavaCard development or learning smart-card programming, this is a great choice. Exactly as described and excellent value.
Review: Change atr 2.0 - It works Well with changing the atr I’m very pleased

## Features

- J2A040 40K JCOP are not fused . It compatibles with JCOP21 36K Card
- They are not Initialized, We can support JCOP script files. please contact us!
- JCOP card only be used by the professional software engineers who know how to develop and use.
- J2A040 JAVA based smart card, 40k EEPROM with Hi-co Mag Card
- Can be printing for Fargo Printer , for zebra printer

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09KN85911 |
| Additional Features | Water Proof |
| Best Sellers Rank | #137,060 in Office Products ( See Top 100 in Office Products ) #18 in Stationary Credit Card Readers |
| Brand | XCRFID |
| Color | 1PCS |
| Compatible Devices | Printer |
| Customer Reviews | 3.8 out of 5 stars 71 Reviews |
| Flash Memory Type | EEPROM |
| Hardware Connectivity | USB |
| Item Weight | 0.02 Kilograms |
| Manufacturer | XCRFID |
| Media Speed | 115 200 or higher |
| Memory Storage Capacity | 40 KB |
| Model Name | XC20 |
| Model Number | XC20 |
| UPC | 612289279000 |
| Warranty Type | No Warranty |

## Product Details

- **Brand:** XCRFID
- **Compatible Devices:** Printer
- **Flash Memory Type:** EEPROM
- **Memory Storage Capacity:** 40 KB
- **Model Name:** XC20

## Images

![XCRFID UNFUSED J2A040 40k EEPROM with 2 Track Hi CO Magstripe Compatible JCOP21 36K Java JCOP Based Smart Card with SDK Kit (1PCS) - Image 1](https://m.media-amazon.com/images/I/51QTwJ5alqL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Are The Unfused?**
A: U sure they infused I’m reading horrible reviews n I just ordered id hate to send them back

**Q: I want no atr set on my cards**
A: The jcop cards are not fused and not  Initialize. we provide the TK value ! you can set your ATR

**Q: can i have the script file or how would i get it**
A: Yes , if you need jcop script file , please contact us . we will reply you at first time on Amazon

**Q: Pin code included?**
A: its not even a actual card. you have to write information on it including the pin...

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great JavaCard for Development
*by H***D on November 5, 2025*

This UNFUSED J2A040 card worked exactly as expected. It came clean and ready to program, and I had no issues loading applets or running tests. The 40K EEPROM provides plenty of space, and the Hi-CO magnetic stripe is a nice extra for projects that still need stripe support. Compatibility was solid with my smart-card reader, and APDU communication was reliable throughout. If you're working with JavaCard development or learning smart-card programming, this is a great choice. Exactly as described and excellent value.

### ⭐⭐⭐⭐⭐ Change atr 2.0
*by O***D on January 11, 2023*

It works Well with changing the atr I’m very pleased

### ⭐ Blank
*by W***L on August 13, 2024*

Didnt work💔

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-03-16*