Careful, I already own a YubiKey Neo with firmware 3.2.0 and it doesn't work (just tried it). Firmware 3.3.0 is needed and it doesn't appear to be upgradable:

Careful, I already own a YubiKey Neo with firmware 3.2.0 and it doesn't work (just tried it). Firmware 3.3.0 is needed and it doesn't appear to be upgradable: https://www.yubico.com/2014/09/yubikey-neo-u2f/ https://www.yubico.com/2014/09/yubikey-neo-u2f/