HP Z230 Maintenance And Service Manual page 17

11 Parallel (option)
12 Rear audio
13 Rear USB 2.0/3.0
14 Serial
15 Serial (option)
Cooling
21 Processor fan
Small form factor workstation components
30 Clear CMOS button
31 Crisis recovery jumper
32 ME/AMT flash override
33 Password jumper
7