Windows Server 2025 RDS 50Cal User Pack.

Physically delivery 

PHYSICAL DELIVERY ONLY — Sealed  package shipped with tracking. No downloads, no emailed keys, no digital delivery.

RDS CALs:

Remote Desktop Services (RDS) provide the ability to access a server's desktop remotely. RDS CALs are specifically required for remote access scenarios. Each user or device that intends to access the server remotely needs to be properly licensed with RDS CALs to ensure compliance with Microsoft's licensing laws. These are additional to ordinary CALs and also attached to either User or Device.