---
product_id: 16598812
title: "HID OMNIKEY 3121 USB Card Reader"
brand: "hid"
price: "€ 44.27"
currency: EUR
in_stock: true
category: "Hid"
url: https://www.desertcart.pt/products/16598812-hid-omnikey-3121-usb-card-reader
store_origin: PT
region: Portugal
---

# Mac & DoD CAC Compatible Plug & Play USB 2.0 Secure Card Authentication HID OMNIKEY 3121 USB Card Reader

**Brand:** hid
**Price:** € 44.27
**Availability:** ✅ In Stock

## Summary

> 🔐 Unlock secure access with the trusted HID OMNIKEY 3121—where reliability meets sleek efficiency.

## Quick Answers

- **What is this?** HID OMNIKEY 3121 USB Card Reader by hid
- **How much does it cost?** € 44.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/16598812-hid-omnikey-3121-usb-card-reader)

## Best For

- hid enthusiasts

## Why This Product

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

## Key Features

- • **LED Status Indicators:** Clear visual confirmation when your card is fully inserted—no guesswork needed.
- • **Optimized Cable Length:** Balanced cord length ensures a clutter-free workspace without compromising reach.
- • **Compact & Durable Design:** Lightweight 0.35 lbs with a sturdy build and handy stand for desktop stability.
- • **Military-Grade Compatibility:** Trusted by DoD personnel, perfect for CAC card authentication on Mac OS.
- • **Seamless USB 2.0 Connectivity:** Instant plug-and-play setup for hassle-free use across devices.

## Overview

The HID OMNIKEY 3121 USB Card Reader is a lightweight, durable device designed for secure card authentication, especially favored by DoD card holders and Mac users. Featuring USB 2.0 plug-and-play connectivity, LED status indicators, and an optimized cable length, it delivers reliable performance and ease of use in professional environments.

## Description

OMNIKE 3121 TAA QTY 10-1990

## Features

- UPC: 639399046315
- Weight: 0. 350 lbs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00AT4NX8S |
| Best Sellers Rank | #274 in Computer Memory Card Readers |
| Customer Reviews | 4.4 4.4 out of 5 stars (362) |
| Date First Available | March 30, 2009 |
| Item Weight | 3.46 ounces |
| Item model number | R31210049-1 |
| Manufacturer | HID Global |
| Product Dimensions | 2.64 x 3.15 x 1.1 inches |

## Images

![HID OMNIKEY 3121 USB Card Reader - Image 1](https://m.media-amazon.com/images/I/51FobDiHsWL.jpg)

## Questions & Answers

**Q: Is this also a writer to chip??**
A: This is a reader/writer.

**Q: Does this card reader work with a VA PIV card?**
A: Yes it does! Works great if you're going to use it for remote work.

**Q: Is this omnikey 3121 version 1, version 2 or version 3?  version 3 does not work with the c2 rower i have**
A: Please see the information at https://www.concept2.com/service/software/concept2-utility/card-reader-overview-and-requirements 
Only Versions 1 and 2 work with the concept2 utility program. I suggest you return to the supplier and swap it with version 1 or 2.

**Q: If you have an hid prox card will this work with that**
A: I don't anything about a hid prox card.  This works with a smart-card.

## Frequently Bought Together

- HID OMNIKEY 3121 USB Card Reader
- Deftun Card Reader Writer USB Swipe Encoder 3 Tracks MSR605X
- Bodno J2A040 Chip Java Jcop Cards W/Hico 2 Track Mag Stripe Jcop21-36K - 10 Pack White with Black Mag

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.pt/products/16598812-hid-omnikey-3121-usb-card-reader](https://www.desertcart.pt/products/16598812-hid-omnikey-3121-usb-card-reader)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-23*