You could take a PUTTY and run
#esxcfg-info | less
That will give you the list of hardware components on the host.
Trouble is, it's a large file, and searching through the list can get tiring unless you know exactly what you are looking for.
So for example if I want to know the details about the NIC cards, or let's say vmnic0, I can do a
#esxcfg-info -l | less
followed by
/vmnic0 and enter
That will take me to the nics
Or #esxcfg-info -l | grep -i vmnic0
Also if the VM's are on the local datastore, take a backup before you do an install, but ideally, move all VM's off the host and then do an install.
Regards
a