Windows Server has FEATURES & CAPABILITIES.
#Get the Features of Windows Server:
Get-WindowsOptionalFeature -Online

#For an easy digestable view:
Get-WindowsFeature

#Get the Capabilities of Windows Server:
Get-WindowsCapability -online

OPENSSH SERVER
# Install the OpenSSH Server
Add-WindowsCapability -Online -Name OpenSSH.Server~~~~0.0.1.0

#Set the service to start when Windows Server starts:
Set-Service -Name sshd -StartupType 'Automatic'

#Get the service to verify:
Get-Service sshd

#Get the firewall rule:
Get-NetFirewallRule -Name "OpenSSH-Server-In-TCP" -ErrorAction SilentlyContinue | Select-Object Name, Enabled

#Config sshd:
notepad C:\ProgramData\ssh\sshd_config

#Start sshd:
Get-Service sshd |Start-Service

#Restart sshd:
Get-Service sshd |Restart-Service

That's it!!! Start WINSCP from another system and set it to:
PROTOCOL: SFTP
HOSTNAME: 192.168.1.x
PORT: 22
USERNAME: This email address is being protected from spambots. You need JavaScript enabled to view it.