In case you need to find the computer model and manufacturer of a remote computer, just use the following command in a command prompt window:
%windir%\System32\wbem\WMIC.exe /node:"ComputerNameORIpAddress" ComputerSystem Get Model, Manufacturer
If you need to specify user credentials, use the following command:
%windir%\System32\wbem\WMIC.exe /node:"ComputerNameORIpAddress" /user:"domain\username" /password:"password" ComputerSystem Get Model, Manufacturer