HP Z640 Workstation Series Service Manual

Designator Name on board Component
SW3 Rear Power Switch Rear power button/LED
SW50 CMOS Clear CMOS button
XBT1 BAT Battery
XMM1 CPU0-DIMM8 CPU0 Memory DIMM8
XMM2 CPU0-DIMM7 CPU0 Memory DIMM7 (not loaded on Z640)
XMM3 CPU0-DIMM6 CPU0 Memory DIMM6
XMM4 CPU0-DIMM5 CPU0 Memory DIMM5 (not loaded on Z640)
XMM5 CPU0-DIMM1 CPU0 Memory DIMM1
XMM6 CPU0-DIMM2 CPU0 Memory DIMM2 (not loaded on Z640)
XMM7 CPU0-DIMM3 CPU0 Memory DIMM3
XMM8 CPU0-DIMM4 CPU0 Memory DIMM4 (not loaded on Z640)
116 Appendix C System board designators

HP Z640 Workstation Series Specifications

General

Chipset	Intel C612
Memory Slots	8 DIMM slots
Form Factor	Tower
Processor Options	Intel Xeon E5-2600 v3/v4
Storage Options	SATA, SAS, SSD
Storage Controllers	Integrated SATA 6.0 Gb/s controller
Graphics Options	NVIDIA Quadro, AMD FirePro
Expansion Slots	1 PCIe Gen3 x8; 1 PCIe Gen3 x4; 1 PCI
Audio	Integrated Realtek HD ALC221
Networking	Integrated Intel I218LM PCIe GbE
Operating Systems	Windows 10