HP DL120 - Manual (Page 63)

Removal and replacement procedures 63
c. Secure the SAS cable lines in the chassis cable tie (3).
2. Connect the SAS LED cable.
a. Connect the other end of the LED cable to the CN26 connector on the system board (1).
b. Connect one end of the LED cable to the SAS controller board LED cable connector (2).
3. Proceed to page 37 for instructions on how to install the SAS hard drive.