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Only one of them. A Windows Server CAL is a license that grants access Windows Server. CALs are used in conjunction with Microsoft Windows Server OS licenses to allow Users and/or Devices to access and utilize the services of that windows server
- User CALs allow a single user access to any number of Windows Servers from an unlimited number of devices
- Device CALs allow an unlimited number of users to access any number of Windows Servers from a single device
- CALs are licensed to access servers of the same level and below. (not forward compatible)
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