--- product_id: 212346502 title: "K40 USB Security Key - Two Factor Authenticator - USB-C with NFC, FIDO2 - Help Prevent Account Takeovers" brand: "feitian" price: "R$10" currency: BRL in_stock: false reviews_count: 13 url: https://www.desertcart.com.br/products/212346502-k40-usb-security-key-two-factor-authenticator-usb-c-nfc store_origin: BR region: Brazil --- # IP67 water-resistant durability USB-C + NFC multi-device compatibility FIDO2 + U2F certified security K40 USB Security Key - Two Factor Authenticator - USB-C with NFC, FIDO2 - Help Prevent Account Takeovers **Brand:** feitian **Price:** R$10 **Availability:** ❌ Out of Stock ## Summary > πŸ”‘ Secure your digital life with style and ease β€” don’t get left behind! ## Quick Answers - **What is this?** K40 USB Security Key - Two Factor Authenticator - USB-C with NFC, FIDO2 - Help Prevent Account Takeovers by feitian - **How much does it cost?** R$10 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/212346502-k40-usb-security-key-two-factor-authenticator-usb-c-nfc) ## Best For - feitian enthusiasts ## Why This Product - Trusted feitian brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Universal Compatibility:** Supports all major OS and top platforms like Google, Microsoft, Coinbase, and more. - β€’ **Built to Endure Your Hustle:** IP67 water-resistant design keeps your security key safe through daily grind and spills. - β€’ **Effortless Security Upgrade:** Plug-and-play simplicity that replaces passwords with a sleek, powerful key. - β€’ **Seamless Cross-Device Access:** Works instantly with laptops, phones, tablets via USB-C or NFCβ€”no drivers needed. - β€’ **Next-Level Account Protection:** FIDO2 & U2F certification means phishing and hacks don’t stand a chance. ## Overview The FEITIAN K40 USB Security Key is a compact, durable two-factor authenticator featuring FIDO2 and U2F certifications. It supports USB-C and NFC connectivity for seamless use across laptops, tablets, and smartphones without driver installation. Water-resistant (IP67) and compatible with major operating systems and platforms, it offers robust protection against phishing and unauthorized access, making it an essential upgrade for professionals prioritizing digital security. ## Description Product description Review: Works great, Looks great - Bought to replace yubikey(tm) that i lost. This looks better on my keychain. Works exactly as yubikey(tm) to secure my laptop and accounts. But much less expensive. I replaced the 5 NFC with this. The USB-C works with phone and laptop no need to use the NFC although It has it. Review: Easy to use - Lots easier and more secure than regular passwords. Most financial sites support the use of passkeys (come on Fidelity what’s taking so long?) ## Features - FIDO2 + FIDO U2F certified and supported USB security key - Supports Computers, Laptops, Tablets, and Mobile Devices with a USB-C port and/or NFC - Works without downloading any drivers. Supported OS: Android, Chrome OS, Windows, MacOS, Linux - Durable design made to last for a long time with everyday use. Water-resistant (IP67) - Helps protect your accounts from phishing and other cyber-attacks. Prevents your devices from unauthorized use. - Works with: Windows Log-In, Twitter, Google Accounts, Microsoft Accounts, Facebook, Salesforce, Zoho, Dropbox, DUO Security, Microsoft Azure Entra ID, Microsoft Active Directory, Coinbase, Bank of America, Okta, Ping Identity, eBay, and many more websites, applications, computers, laptops and devices that accept USB Security Keys. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B089ZYVCV6 | | Additional Features | Water Resistant (IP67) | | Best Sellers Rank | #2,383 in USB Flash Drives | | Brand | FeiTian | | Color | Black with silver | | Compatible Devices | Laptop, Mobile, Tablet | | Compatible Phone Models | All with NFC, Android, Apple and more | | Connectivity Technology | USB | | Customer Reviews | 4.1 out of 5 stars 158 Reviews | | Flash Memory Type | USB | | Hardware Connectivity Technology | USB Type C | | Hardware Interface | USB | | Item Dimensions D x W x H | 2"D x 0.75"W x 0.13"H | | Item Weight | 7.2 Grams | | Manufacturer | Feitian Technologies Co., Ltd. | | Memory Storage Capacity | 985 GB | | Mfr Part Number | ePass K40 | | Model Name | ePass K40 | | Model Number | ePass K40 | | Special Feature | Water Resistant (IP67) | | Warranty Description | 1 year warranty from the date of purchase | | Write Speed | 12 megabytes per second or less | ## Product Details - **Brand:** FeiTian - **Hardware Interface:** USB - **Memory Storage Capacity:** 985 GB - **Special Feature:** Water Resistant (IP67) - **Write Speed:** 12 megabytes per second or less ## Images ![K40 USB Security Key - Two Factor Authenticator - USB-C with NFC, FIDO2 - Help Prevent Account Takeovers - Image 1](https://m.media-amazon.com/images/I/51s3DEZQnIL.jpg) ![K40 USB Security Key - Two Factor Authenticator - USB-C with NFC, FIDO2 - Help Prevent Account Takeovers - Image 2](https://m.media-amazon.com/images/I/31KflwPP3CL.jpg) ![K40 USB Security Key - Two Factor Authenticator - USB-C with NFC, FIDO2 - Help Prevent Account Takeovers - Image 3](https://m.media-amazon.com/images/I/414tXihEfTL.jpg) ![K40 USB Security Key - Two Factor Authenticator - USB-C with NFC, FIDO2 - Help Prevent Account Takeovers - Image 4](https://m.media-amazon.com/images/I/51X80E50qZL.jpg) ![K40 USB Security Key - Two Factor Authenticator - USB-C with NFC, FIDO2 - Help Prevent Account Takeovers - Image 5](https://m.media-amazon.com/images/I/71PqTes6-DL.jpg) ## Questions & Answers **Q: This usb-c key says it has nfc. does this mean it can be used to authenticate a device wirelessly, or does it still have to be plugged in?** A: This Security Key (Feitian ePass K40) absolutely DOES work via NFC. I can confirm this as I have used it with NFC on my phone many of times as it is very convenient & very easy to do. It's slightly faster than plugging it in via USB as well, but either way works fine. I personally prefer using it with NFC. I am not sure where Sgt. Scott got his answer from, but maybe his phones NFC isn't working because as I said before, this Security Key most certainly does work with NFC. I can add a video to my answer showing me doing so if you would like a visual confirmation, but I assure you, it does work. It specifically states it in the item title as well as in the item description. NFC is one of the main reasons I chose this particular security key. I personally have 3, this one, which is the (ePass k40), I also have the (ePass K9), & the (ePass K40 Plus) which is the same as this one but also has PIV functions. All 3 of them have NFC capabilities & all 3 work flawlessly via USB & NFC. **Q: Does it work with the ipad pro 2018 model? it does not state that it supports ios.** A: No, uses usb c connector **Q: Does it work with bank of america?** A: Of course, I use this at Bank of America. **Q: Does it work in password Managers like Keepass?** A: For me, this doesn't work at all with almost no helpful documentation. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great, Looks great *by N***K on August 24, 2020* Bought to replace yubikey(tm) that i lost. This looks better on my keychain. Works exactly as yubikey(tm) to secure my laptop and accounts. But much less expensive. I replaced the 5 NFC with this. The USB-C works with phone and laptop no need to use the NFC although It has it. ### ⭐⭐⭐⭐⭐ Easy to use *by K***. on December 22, 2025* Lots easier and more secure than regular passwords. Most financial sites support the use of passkeys (come on Fidelity what’s taking so long?) ### ⭐⭐⭐⭐ Finally a security key that supports modern devices *by E***I on August 13, 2020* With not a whole lot of reviews I was skeptical of this product at first arguably but I gave it a try because I have been searching for a better hardware security key that actually works with modern devices that use USB C and NFC. I personally use a lot of Apple products so the utility of being able to plug this into my MacBook and tap it on the back of my iPhone and sign-in is clearly there. The only caveat is you can only set it up from a computer for example with Google but the NFC functionality is still there. I am not sure about the long-term reliability of this product and how effective it will be. But for now it is really the only durable and somewhat decent solution for people who use USB C devices like most modern laptops and have either an Android or iPhone. It works great with my google account and I look forward to testing more accounts soon. ## Frequently Bought Together - FEITIAN ePass K40 USB Security Key - Two Factor Authenticator - USB-C with NFC, FIDO U2F + FIDO2 - Help Prevent Account Takeovers with Multi-Factor Authentication - FEITIAN iePass K44 Dual-Connector iOS USB Security Key - Two Factor Authenticator - USB-C + Lightning - FIDO U2F + FIDO2 + PIV + MFi - Help Prevent Account Takeovers with Multi-Factor Authentication --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.br/products/212346502-k40-usb-security-key-two-factor-authenticator-usb-c-nfc](https://www.desertcart.com.br/products/212346502-k40-usb-security-key-two-factor-authenticator-usb-c-nfc) --- *Product available on Desertcart Brazil* *Store origin: BR* *Last updated: 2026-05-28*