You can download Unified Service Desk 2.1.0.556 Version Package Deployer and Executables from the below links,
Name | Size | Download Link | Description |
CRM2016-USD-2.1.0-PackageDeployer.exe | 210.6 MB | Click here | USD Package Deployer to install solution components in CRM |
CRM2016-USD-2.1.0-amd64.exe | 88.4 MB | Click here | 64 bit USD client |
CRM2016-USD-2.1.0-i386.exe | 88.4 MB | Click here | 32 bit USD Client |