I ran our 2008/R2 keys through a PID checker and they came back as: Volume:CSVLK which is: CSVLK - Microsoft Customer Support Volume License Key What type of activation do these keys need? Our W7 keys came back as Volume:MAK.
CSVLK are KMS-host keys, for on-line (or phone) activation throigh MS. Each key can activate 6 different machines, real or virtual. Machines, activated with CSVLK keys, become KMS-hosts and can activate clients if they use GVLK key.