the key be label for Windows only . every time the Mac reboot , I have to re-identify the keyboard because the Mac do not recognize it . in addition , like most cheapo keyboard it have no extra usb port . the key be not that annoying , but they be annoying , especially if you move from keyboard to keyboard ; this one will always be the odd one out , with it be somewhat small and slant key . all in all , you would be much better off get a generic Windows keyboard at you local big box store . again : this should not be call Mac compatible , despite what be print on the box . I be simply glad I buy it at half its suggest retail price . this be the lowest rating I have ever give a product sell by Amazon .