If the module is available in PowerShell Gallery, you could use Install-Module on a connected computer, and simply file copy the module to the non-connected computer.
If the module is not available on PowerShell Gallery, then you would need to manually install the module. For example, the RSAT can be used to install many Windows Server modules on a client computer.
If you were more specific about the module you’re writing about, it would be easier to provide a more specific answer.
Find-Module -Name *
(Find-Module -Name *).Count
# Results
3222
# Use a GUI to select to save and install one or more modules.
Find-Module -Name * |
Out-GridView -Title 'Select a module to download and install. Use Shift + Right Click to choose one or more' -PassThru |
Save-Module -Path "$env:USERPROFILE\Documents\WindowsPowerShell\Modules" -Verbose
PowerShell Module and Package Managment is built into Win10 and higher, otherwise you need to download it, and you must be on PwoerShell 3-4+ to use it.
Introducing PackageManagement in Windows 10
PackageManagement PowerShell Modules Preview - March 2016
Supported Operating System
Windows 7 Service Pack 1, Windows 8.1, Windows Server 2008 R2 SP1, Windows Server 2012, Windows Server 2012 R2
• Windows Server 2012 R2
• Windows 8.1 Pro
• Windows 8.1 Enterprise
• Windows Server 2012
• Windows 7 SP1
• Windows Server 2008 R2 SP1
You can download a module without installing it locally using Save-Module, should you need to save it to a network share or some such and want to copy from there to install it on subsequent machines.