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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 5
... Graphics Subsystem 6.1 Introduction 6-1 6.2 Functional Description 6-2 6.3 Display Modes 6-4 6.4 Upgrading 6-5 6.5 Monitor Connectors 6-6 6.5.1 Analog Monitor Connector 6-6 6.5.2 DisplayPort Connector 6-7 7 Power and Signal Distribution 7.1 Introduction 7-1 7.2 Power Distribution 7-1 7.2.1 USDT Power Distribution 7-1 7.2.2 SFF/CMT Power Distribution 7-2 7.2.3 Energy Star Compliancy 7-6 7.3 Power Control 7-6 7.3.1 Power Button 7-6 7.3.2 Wake Up Events 7-8 7.3.3 Power Management 7-9 7.4 Signal Distribution 7-10 Technical Reference Guide www...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 17
... chapter includes the following topics: ■ Features (2.2) ■ System architecture (2.3) ■ Specifications (2.4) HP dc7900 CMT Technical Reference Guide www.hp.com 2-1 HP dc7900 USDT HP dc7900 SFF Figure 2-1. 2 System Overview 2.1 Introduction The HP Compaq dc7900 Business PC personal computers (Figure 2-1) deliver an outstanding combination of the office enterprise. Based on the Intel processor with the Intel Q45 Express chipset, these systems ...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 18
...❏ Smart Cover (hood) Sense ❏ Smart Cover (hood) Lock (SFF and CMT form factors only) ❏ USB port disable ❏ Intel Standard Manageability support ❏ Intel vPro Technology ❏ HP Virtual Safe Browser ■ PS/2 enhanced keyboard ■ PS/2 optical scroll ...mouse ■ Energy Star compliancy met by all USDT form factors (Energy Star-qualified configurations of SFF and CMT form factors are available). 2-2 www...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 19
...2-1 shows the differences in features between the different PC series based on form factor: Table 2-1 Feature Difference Matrix by Form Factor USDT SFF CMT Processor types supported Intel Celeron, Pentium dual-core, Core 2 Duo Intel Celeron, Pentium dual-core, Core 2 Duo, Core ...: # & type of PCI riser card field option (full-height dimensions: height = 4.2 in., length = 6.875 in standard configuration. Technical Reference Guide www.hp.com 2-3 Not accessible if PCI riser card field option is installed. [4] Accepts low-profile PCIe card: height = 2.5 in., length = 6.6 in. [5] Full...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 20
... Q45 Express chipset - The integrated graphics controller of the Q45 on the Intel Q45 Express chipset (Figure 2-2). Table 2-2. Architectural Differences By Form Factor Function USDT SFF Memory sockets 2 SODIMMs 4 DIMMs PCIe 2.0 x16 graphics slot No 1 [1] PCIe x4 (x16 connector) graphics slot No 1 [1] # of PCIe 1.1 x1 slots 0 1 [1] # of system functionality. System ...riser. [4] 2nd serial port possible with the ICH10-DO component through a 800/1066/1333-MHz Front-Side Bus (FSB) and communicates with optional adapter. 2-4 www.hp.com Technical Reference Guide
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 22
... mounting an LGA775-type processor package. Always use the same assembly or one of the heatsink/fan assembly and the processor. 2-6 www.hp.com Technical Reference Guide The SFF and CMT form factors can result in this guide are backward-compatible with vPro Technology include hardware-based tools that allow corporate IT...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 24
... bracket/cable assembly. 2.3.4 System Memory These systems implement a dual-channel Double Data Rate (DDR2) memory architecture. COM2 requires external bracket/cable assembly. [3] Supported only on SFF and CMT form factors. Controller AD1884A HD Audio Codec Audio mixer Two digital-to-analog stereo converters Two analog-to eight gigabytes of memory while...- Table 2-4 shows the functions provided by the support components. System Overview 2.3.3 Support Components Input/output functions not provided by the chipset are NOT interchangeable. 2-8 www.hp.com Technical Reference Guide
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 25
... Overview 2.3.5 Mass Storage All models support at least two mass storage devices, with one removable media drive such as a CD-ROM drive. 2.3.6 Serial Interface The SFF and CMT form factors include a serial port accessible at the front of 230K and 460K. 2.3.7 Universal Serial Bus Interface All models provide ten Universal Serial... RS-232-C/16550-compatible and supports standard baud rates up , Alert-On-LAN (AOL), Alert Standard Format (ASF), and AMT features. Technical Reference Guide www.hp.com 2-9 The controller provides automatic selection of USB ports individually or in groups.
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 27
Where provided, metric statistics are subject to change : 1500 ft/min. Technical Reference Guide www.hp.com 2-11 rate of change < 20°C/Hr) Shock (w/o damage) 5 Gs [1] 20 Gs [1] Vibration 0.000215 G2/Hz, 10-300 Hz 0.0005 G2/Hz, 10-500 ...-264 VAC Input Line Frequency Range: Nominal Maximum 50-60 Hz 47-63 Hz Energy Star 4.0 with 80Plus Bronze-level compliancy USDT SFF & CMT Standard Optional Maximum Continuous Power: USDT SFF CMT 135 watts 240 watts 365 watts NOTE: Energy Star 4.0 with 80Plus Bronze-level compliancy option available for the systems covered...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 28
For desktop configuration, swap Height and Width dimensions. Minitower configuration. System Overview Table 2-8 Physical Specifications Parameter USDT [2] SFF [2] CMT ...[3] Height 2.60 in (6.60 cm) 3.95 in (10.03 cm) 17.63 in (44.8 cm) Width 9.90 in (25.15 cm) 13.3 in (33.78 cm) 7.0 in (16.8 cm) Depth 10.0 in (25.40 cm) 14.9 in (37.85 cm) 17.8 in desktop... NOTES: [1] [2] [3] [4] System configured with 1 hard drive, 1 diskette drive (SFF and CMT only), and no PCI cards. Desktop (horizontal) configuration. Applicable to unit in (45.21 cm) Weight [1] 7.0 lb (3....
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 30
... 80 GB 160 GB Drive Size 2.5 & 3.5 in.[1] 2.5 & 3.5 in . drives only. [2] USDT supports 1.5 Gb/s drives only. [3] USDT supports up to 7200-RPM drives only. [4] Supported by SFF and CMT form factors only. 250 GB [4] 3.5 in SATA 3.0 Gb/s Yes 1.0 ms 11 ms 18 ms 488,397,168 7200 RPM SMART IV 2-14 www...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 33
...consumption of the heatsink will likely result in system damage and lost data. CAUTION: Attachment of 65 watts. Technical Reference Guide www.hp.com 3-3 Refer to ensure proper cooling. Although the system is critical on these systems. Intel Model Q6700 Q6600 E6850 E6750 E6550 ...4 MB [1] 2.20 800 2 MB [1] 2.00 800 2 MB [1] 2.00 800 1 MB [1] 1.80 800 1 MB [1] 2.00 800 512 KB Form Factor support SFF, CMT SFF, CMT all all all all all all all all NOTE: [1] Standard Intel feature set including EM64T, XD, and EIST support. Refer to the processor component.
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 34
...of the slowest memory module. The USDT form factor supports up to eight gigabytes of memory while the SFF and CMT form factors support up to be displayed before the system hangs. 3-4 www.hp.com Technical Reference Guide memory installed for x8 and x16 devices ■ CAS latency (CL) of... Subsystem 3.3 Memory Subsystem All models support non-ECC PC2-5300 and PC2-6400 DDR2 memory. The USDT system board provides two SODIMM sockets and the SFF and CMT system boards provide four DIMM sockets ■ XMM1, channel A (black) ■ XMM2, channel A (white, not present in USDT form factor) &#...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 35
SFF and CMT form factors use (refer to the operating system. Changing memory modules while the unit is not available to chapter 6). The amount of system memory for managment functions. Technical Reference Guide www.hp.com 3-5 Addressing memory above 4 GB requires a 64-bit operating...modules) for video use DIMM sockets. [2] Not present on USDT form factor. [3] Dual-channel symetrical [4] Only SFF and CMT support this size memory HP recommends using symmetrical loading (same-capacity, same-speed modules across both channels) to system resource requirements. The Q45 ...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 38
...: -- --- 0 0 0 0 0 0 0 0 0 0 7 AD20 7 AD25 7 AD27 32 48 NOTES: [1] Function not used in these systems. [2] USB 1.1 controllers in 6+6 configuration. 8+4 configuration will have USB 1.1 controller #6 use Function 26, Device 2. [3] SFF and CMT form factors only. [4] CMT form factor only [5] Function is only visible in IDE mode (not visible in AHCI orRAID SATA emulation mode). 4-2 www...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 39
... Bus Mastering Devices Device REQ/GNT Line PCI Connector Slot 1 REQ0/GNT0 PCI Connector Slot 2 REQ1/GNT1 PCI Connector Slot 3 REQ2/GNT2 Note [1] [1] [2] NOTE: [1] SFF and CMT form factors only. [2] CMT form factor only PCI bus arbitration is based on the PCI bus. Technical Reference Guide www....hp.com 4-3 System Support The PCI bus supports a bus master/target arbitration scheme. A target is a device that complies with PCI traffic, therefore reducing the ...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 44
... System Interrupts PIRQ B PIRQ C PIRQ D PIRQ E PIRQ F A B D A C D PIRQ G C B A PIRQ H D C B NOTES: [1] SFF and CMT only [2] CMT only The PCI interrupts can be configured by PCI Configuration Registers 60h..63h to share the standard ISA interrupts (IRQn). ✎ ..., PCI devices may also use DMA operation as well. Although the DMA method has been traditionally used to or from an ISA I /O Controller Hub. 4-8 www.hp.com Technical Reference Guide System Support System Board Connector PCI slot 1 (J20) [1] PCI slot 2 (J21) [1] PCI slot 3 (J22) [2] PIRQ A Table 4-5. For detailed ...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 48
... been removed since the last system start up events supported by BIOS. The GPIO ports 44 and 45 of ACPI- Smart Cover Lock (Optional) The SFF and CMT systems support an optional solenoid-operated locking bar that hold the locking mechanism in CMOS is updated, and the user is prompted for... soft-off PME Suspend or soft-off Serial Port Ring Suspend or soft-off USB Suspend only Keyboard Suspend only Mouse Suspend only 4-12 www.hp.com Technical Reference Guide During POST, status bit is cleared and no other action is taken by this level.
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 54
... migration from a single hard to a RAID0 or RAID1 dual hard drive array without a cable) to a 2.5-inch mass storage device. 5-2 www.hp.com Technical Reference Guide Input/Output Interfaces 5.2 SATA/eSATA Interfaces These systems provide two, three, or four serial ATA (SATA) interfaces that provides full...and deletion of the legacy IDE host adapter. A software solution is included that support tranfer rates up to that of RAID arrays. The SFF and CMT form factors can also support an external SATA (eSATA) device through an optional bracket/cable assembly. 5.2.1 SATA interface The SATA...
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Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers


Page 55
... driver can support an external SATA (eSATA) storage device. This driver is required to attach an eSATA device to AHCI. Technical Reference Guide www.hp.com 5-3 The eSATA interface provides higher bandwidth than USB 2.0 and Firewire (1394) interfaces. An optional bracket/cable assembly (Figure 5-2) is pre-... and the Removeable Media Boot setting does not apply. Optional eSATA Bracket/Cable Assembly. Input/Output Interfaces 5.2.2 eSATA interface The SFF and CMT form factors provide a SATA/eSATA port (connector P64 on systems shipped with hot-plug support must be set to the...

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  • Service Reference Guide: HP Compaq dc7900 Business PC
  • Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers
  • HP ProtectTools User Guide
  • Troubleshooting Guide
  • Hardware Reference Guide - dc7900 Series Convertible Minitower
  • Desktop Management Guide
  • vPro Setup and Configuration for the dc7900p Business PC with Intel vPro Processor Technology
  • Support Telephone Numbers
  • Safety and Regulatory Information Desktops, Thin Clients, and Personal Workstations
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