To view Hostname, Computer Type, Machine ID, Boot ID, OS, Kernel, Architecture
hostnamectl
To find Max RAM supported (Works on Physical OS)
sudo dmidecode -t 16
To find the same in Windows OS, using PowerShell
Get-WmiObject -Class Win32_PhysicalMemoryArray | Select-Object MaxCapacity, MemoryDevices
wmic memphysical get maxcapacity
MaxCapacity: Shows the maximum supported memory in kilobytes (divide by 1024 to get MB, or 1048576 for GB).