It worked without any caveat using Chrome and Firefox, It did not work with MS Edge but can be my specific computer the issue.
Very straightforward to use. Note that this size is perfect to stay in your computer like forever, is so small that taking it in and out of the USB port is not easy unless you buy a small leash that comes with extra $$ spent.

Plug it in and forget about it. Do *not* dork around with slipping a small lanyard through the hole and attempting to keep it on your key ring. Dedicate it to a device, plug it in, and leave it. Only a slight and smooth curved edge will be exposed. Just enough to blink and be hit by your finger when you need to auth, but low-profile enough to avoid catching on anything as your laptop slips in and out of your bag, for example.

Highly recommended. Solid pick. Smart security. Consider a larger NFC variety for your keying or elsewhere (2 is one, one is none, brother!).

I use physical / hardware keys for work and home for pretty much as many applications that'll take Yubikeys for MFA / 2FA as possible. I keep several on my keychain (USB-A and USB-C) plus backups in a safe. I purchased this key so that I could leave it physically plugged in to my docking station. A handful of my colleagues have accidentally dropped laptops and other devices with their Yubikeys plugged in only to have the key become damage in the process. This low-profile key only sticks out about 1/8" and the bit that's exposed is metal; as a result, there's a much lower probability of damaging the device in a fall.

I started my 2FA journey with Authy. Authy is just like the Google Authenticator, but not tied to one device. It worked well until they stopped supporting Chrome. No problem, I have the desktop app too. Or, I did... They stopped supporting Linux too. With Google constantly changing how their browser works and breaking extensions I decided to switch to Firefox. And with Authy breaking everything else, it was time to change. I tried MYKI but had difficulty syncing. Their Linux desktop app also began giving me problems. I've heard nothing but praise for Yubikey, so I took the plunge. It turns out, while not all sites support it directly, they have an app just like Authy and Google as well. Virtually any site that supports 2FA will work with the Yubio Authenticator. Yubico uses open source for its authenticator app, I like that! They have a Linux Desktop app, a requirement for me. But what really sets Yubico Authenticator apart from the competition is the Yubikey. It's a hardware lock for the authenticator app. Sure, all authenticators have a password lock. But if someone gets or guesses your password, they're in. With Yubico you must have the key and you must touch it to receive the TOTP code. Each touch of the key generates a seemingly random 32 character key. It adds a couple of additional layers of security. And that's only one protocol. For sites that officially support Yubikeys, you get an extra layer of protection. Yubico supports just about every currently known protocol. As an added bonus, Yubico says that in the 11 years they've been in business, they have never had a security breach with sites where the customer has utilized their products. That says a lot!

These are very highly recommended for proper secure login. These are a great setup as they can be left in a laptop without interfering with operation or transport. Though I should note that for security reasons you should never have this in a laptop while traveling. These types of keys are great for increasing security while also increasing convenience which is very rare. The Yubikey ones have a couple of advantages over some others, first Yubico has been involved in developing these standards from the start and second, these support many different protocols, so just about everything that uses any type of key for 2 factor auth or for passwordless auth is practically guaranteed to support yubikeys.