HP Z840 Workstation Series Service Manual

Changing the power button configuration (Windows only)
CAUTION: To reduce the risk of data loss, do not use the power button to turn off the computer unless the
system is unresponsive.
NOTE: If the computer is unresponsive, press and hold the power button for four seconds to completely
turn off power to the computer.
Windows 7
1. Select Start, and then select Control Panel > System and Security > Power Options.
2. In the left pane, click Choose what the power buttons do.
3. Select the desired options.
If you choose Sleep or Hibernate, you can press the power button to initiate standby, and then press it again
to exit standby and return to your work. To completely turn off the workstation, select Start > Shut Down.
Windows 8
1. Point to the upper-right or lower-right corner of the Start screen to display the charms.
2. Select Search.
3. In the Search field, type control.
4. Select Control Panel, and then select System and Security > Power Options.
5. Select Choose What the Power Button Does.
6. Select the desired options.
44 Chapter 2 System management

HP Z840 Workstation Series Specifications

General

Chipset	Intel C612
Memory Slots	16 DIMM slots
Processor	Intel Xeon E5-2600 v3/v4 series
Storage	Supports SATA, SAS, and SSD
Graphics	NVIDIA Quadro and AMD FirePro options
Expansion Slots	7 PCIe slots
Power Supply	1125W 90% efficient
Operating System	Windows 10 Pro 64, Red Hat Enterprise Linux, SUSE Linux Enterprise Desktop
Ports	USB 3.0, USB 2.0