Had to quickly grab some serial numbers from Dell servers the other day along with RAM information. WMIC is an awesome way of doing this! Some links regarding further examples are here & here. In my case the below can quickly grab the serial either on the local machine or remotely from another device.
Open up a command prompt and enter the below –
C:\wmic bios get serialnumber
C:\wmic /user:administrator /node:remote-host bios get serialnumber
C:\wmic memorychip get banklabel, devicelocator, caption, capacity
The first example is for running on a local machine, the second for obtaining the serial of a remote device and the last is to grab some basic information regarding installed RAM.