User guide

HP Z640 Workstation system board components
I/O PCI/PCIe Power
1 Front audio 12 PCIe2 x1 25 Battery
2 Front USB 3.0 13 PCIe3 x16 26 Processor and memory power
3 Internal USB 2.0 14 PCIe2 x4 27 Front UI, power button, LED
4 Internal USB 3.0 15 PCIe3 x8 28 Main power
5 Keyboard/mouse 16 PCIe3 x16 29 Rear power button/LED
6 Network 17 PCI 32/33 SATA (SAS optional)
7 Rear audio Cooling 30 Hard drive LED
8 Rear USB 2.0 18 CPU0 fan 31 SATA 6 Gb/s
9 Rear USB 3.0 19 CPU0 memory fans 32 sSATA 6 Gb/s
10 Serial (option) 20 CPU1 fan (option) Service
11 Thunderbolt GPIO 21 CPU1 memory fan (option) 33 Boot Block Recovery (BBR) jumper
22 Front fan 34 Clear CMOS button
23 HDSJ 35 ME/AMT flash override
24 Rear fans 36 Password jumper
For related expansion card slot information, see
Expansion slots on page 51
HP Z640 Workstation components 11