Local PC:

wmic csproduct get vendor, name, identifyingnumber

Remote PC:

psexec \\nome_pc wmic csproduct get vendor, name, identifyingnumber

Oppure

Local PC:

wmic bios get serialnumber

Remote PC:

psexec \\nome_pc wmic bios get serialnumber

Se vuoi sapere anche se è a 32 bit o 64 bit, il produttore e il modello

Local PC:

wmic computersystem get model, name, manufacturer, systemtype

Remote PC:

psexec \\nome_pc wmic computersystem get model, name, manufacturer, systemtype