HP Z840 Workstation Series

HP Z840 Workstation system board components
I/O PCI/PCIe Power
1 Front audio 16 PCIe3 x4 – CPU0 31 Battery
2 Front USB 3.0 17 PCIe3 x16 – CPU0 32 PCU/memory power
3 Internal USB 2.0 18 PCIe3 x8 – CPU1 33 CPU0/memory power
4 Internal USB 3.0 19 PCIe3 x16 – CPU1 34 CPU1/memory power
5 Keyboard/mouse 20 PCIe2 x8 (4) PCH (single proc)
PCIe3 x8 CPU1 (dual proc)
35 Front power button/LED/speaker
6 Network 21 PCIe3 x16 – CPU0 36 Main power
7 Rear audio 22 PCIe2 x1 – PCH 37 Rear power button/LED
8 Rear USB 2.0 Cooling Service
9 Rear USB 3.0 23 Auxiliary fan 38 Clear CMOS button
10 Serial 24 CPU/memory fans 39 Boot Block Recovery (BBR) jumper
11 Thunderbolt GPIO 25 CPU0 auxiliary cooler 40 ME/AMT Flash override
SAS/SATA 26 CPU1 auxiliary cooler 41 Password jumper
12 Hard drive LED 27 Front fan 1 (top) 42 Override Option for Slot 5
13 SAS/SATA 6Gb/s 28 Front fan 2 (bottom)
14 SATA 6 Gb/s 29 Hard drive thermal jumper
15 sSATA 6 Gb/s 30 Rear chassis fans
NOTE: For related expansion card slot information, see
Expansion slots on page 51.
18 Chapter 1 Hardware overview