HP Z8 G4 Maintenance And Service Guide

Solving keyboard and mouse problems
If you encounter keyboard or mouse problems, see the documentation that came with the equipment and to
the common causes and solutions listed in the following table.
A wireless keyboard/mouse is not working correctly. Symptoms include lagging mouse movement, jumpy mouse/keyboard, or no function
of mouse/keyboard and external drive.
Cause Solution
If your computer is equipped with USB 3.0 ports, connected USB 3.0
devices can interfere with the wireless keyboard USB receiver.
Connect the wireless keyboard USB receiver to a USB 2.0 port that
is separated from ports with USB 3.0 devices. If you still experience
interference, you may have to place the connectors farther apart
using an external USB hub.
Keyboard commands and typing are not recognized by the computer.
Cause Solution
Keyboard connector is not properly connected. Shut down the computer, reconnect the keyboard to the back of
the computer, and then restart the computer.
Program in use has stopped responding to commands. Shut down your computer using the mouse and then restart
the computer.
Keyboard needs repairs. See the Worldwide Limited Warranty for terms and conditions.
Computer is in Sleep state. Press the power button to resume from Sleep state.
CAUTION: When attempting to resume from Sleep date, do not
hold down the power button for more than four seconds.
Otherwise, the computer will shut down and you will lose any
unsaved data.
Mouse does not respond to movement or is too slow.
Cause Solution
Mouse connector is not properly plugged into the back of
the computer.
Shut down the computer using the keyboard.
1. Press the Ctrl and Esc keys at the same time (or press
the Windows logo key) to display the Start menu.
2. Use the arrow keys to scroll to and select the power icon at
the top right on the menu, and then press Enter.
3. Use the arrow keys to select Shut Down, and then press Enter.
4. After the shutdown is complete, plug the mouse connector
into the back of the computer (or the keyboard) and restart.
Program in use has stopped responding to commands. Shut down the computer using the keyboard then restart
the computer.
Mouse may need repair. See the Worldwide Limited Warranty for terms and conditions.
Computer is in Sleep state. Press the power button to resume from Sleep state.
CAUTION: When attempting to resume from Sleep state, do not
hold down the power button for more than four seconds.
Otherwise, the computer will shut down and you will lose any
unsaved data.
64 Chapter 6 Troubleshooting without diagnostics

HP Z8 G4 Specifications

General

Display included	No
Keyboard included	Yes
Power supply	1125 W
Operating system architecture	64-bit
Audio chip	Realtek ALC221
Product type	Workstation
Market positioning	Business
Motherboard chipset	Intel C622
Chassis type	Tower
Product color	Black
Country of origin	China
Number of 3.5\" bays	4
Number of 5.25\" bays	2
PCI Express x8 slots	3
Headphone outputs	1
HDMI ports quantity	0
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	8
Cabling technology	10/100/1000Base-T(X)
Ethernet LAN data rates	10, 100, 1000 Mbit/s
HDD speed	7200 RPM
HDD interface	SATA
Storage media	HDD
Optical drive type	DVD Super Multi
Card reader integrated	-
Total storage capacity	1000 GB
Memory slots	24x DIMM
Internal memory	8 GB
Memory channels	Hepta-channel
Memory clock speed	2666 MHz
Internal memory type	DDR4-SDRAM
Maximum internal memory	- GB
Memory layout (slots x size)	1 x 8 GB
Tcase	77 °C
Stepping	U0
Processor cache	11 MB
Processor model	4108
System bus rate	- GT/s
Processor socket	LGA 3647 (Socket P)
Processor threads	16
Processor codename	Skylake
Processor frequency	1.8 GHz
Processor cache type	L3
Processor lithography	14 nm
Processor manufacturer	Intel
PCI Express slots version	3.0
Processor boost frequency	3 GHz
Thermal Design Power (TDP)	85 W
Maximum number of PCI Express lanes	48
Memory clock speeds supported by processor	2400 MHz
Maximum internal memory supported by processor	768 GB
Scalability	2S
Processor code	SR3GJ
Processor ARK ID	123544
Intel TSX-NI version	1.00
Processor package size	76.0 x 56.5 mm
Supported instruction sets	AVX, AVX 2.0, AVX-512, SSE4.2

Weight and Dimensions

Depth	551.2 mm
Width	215.9 mm
Height	444.5 mm
Weight	22400 g