what is mak and kms in microsoft key
Volume license key Starting with Windows Vista, Microsoft replaced VLKs with Multiple Activation Keys (MAK) and Key Management Server (KMS) keys. Hosts activated via a KMS have to report back to that key server once every 180 days.[3][4]
AltGr key AltGr (also Alt Graph, or Right Alt[1]) is a modifier key found on some computer keyboards and is primarily used to type characters that are unusual for the locale of the keyboard layout, such as currency symbols and accented letters. On a typical, IBM-compatible PC keyboard, the AltGr key, when present, takes the place of the right-hand Alt key. In macOS, the Option key has functions similar to the AltGr key.