Yubikey 五折特卖，2pack，May 4th only，无需 coupon code

2x Yubico YubiKeys 5 USB-A NFCs Bundle Keys $41.40

2x Yubico YubiKeys 5C USB-C NFCs Bundle Keys $50.60

2x Yubico YubiKeys 5 + 5C NFCs Bundle Keys $46

https://www.yubico.com/us/store/2022/may-the-4th/