Dell OptiPlex 960 (Late 2008) - Manual (Page 87)

20. Set PID and PPS is the next option.
The PID and PPS can be input manually or by using a USB key once the SCS generates the codes.
This option is for entering the provisioning ID (PID) and provisioning passphrase (PPS). PIDs are eight characters and
PPS are 32 characters. There are dashes between every set of four characters, so including dashes, PIDs are nine
characters and PPS are 40 characters. An SCS must generate these entries.