PCI Express Connectors

System Support

	A1	A11	A12	A18

x1 Connector								A82
								A82


x16 Connector

	B1	B11	B12					B82
Figure 4-3. PCI Express Bus Connectors

				Table 4-4.
		PCI Express Bus Connector Pinout

Pin	B Signal	A Signal	Pin	B Signal	A Signal	Pin	B Signal	A Signal

01	+12 VDC	PRSNT1#	29	GND	PERp3	57	GND	PERn9

02	+12 VDC	+12 VDC	30	RSVD	PERn3	58	PETp10	GND

03	RSVD	+12 VDC	31	PRSNT2#	GND	59	PETn10	GND

04	GND	GND	32	GND	RSVD	60	GND	PERp10

05	SMCLK	+5 VDC	33	PETp4	RSVD	61	GND	PERn10

06	+5 VDC	JTAG2	34	PETn4	GND	62	PETp11	GND

07	GND	JTAG4	35	GND	PERp4	63	PETn11	GND

08	+3.3 VDC	JTAG5	36	GND	PERn4	64	GND	PERp11

09	JTAG1	+3.3 VDC	37	PETp5	GND	65	GND	PERn11

10	3.3 Vaux	+3.3 VDC	38	PETn5	GND	66	PETp12	GND

11	WAKE	PERST#	39	GND	PERp5	67	PETn12	GND

12	RSVD	GND	40	GND	PERn5	68	GND	PERp12

13	GND	REFCLK+	41	PETp6	GND	69	GND	PERn12

14	PETp0	REFCLK-	42	PETn6	GND	70	PETp13	GND

15	PETn0	GND	43	GND	PERp6	71	PETn13	GND

16	GND	PERp0	44	GND	PERn6	72	GND	PERp13

17	PRSNT2#	PERn0	45	PETp7	GND	73	GND	PERn13

18	GND	GND	46	PETn7	GND	74	PETp14	GND

19	PETp1	RSVD	47	GND	PERp7	75	PETn14	GND

20	PETn1	GND	48	PRSNT2#	PERn7	76	GND	PERp14

21	GND	PERp1	49	GND	GND	77	GND	PERn14

22	GND	PERn1	50	PETp8	RSVD	78	PETp15	GND

23	PETp2	GND	51	PETn8	GND	79	PETn15	GND

24	PETn2	GND	52	GND	PERp8	80	GND	PERp15

25	GND	PERp2	53	GND	PERn8	81	PRSNT2#	PERn15

26	GND	PERn2	54	PETp9	GND	82	RSVD	GND

27	PETp3	GND	55	PETn9	GND

28	PETn3	GND	56	GND	PERp9

4-6

www.hp.com

Technical Reference Guide

dc7800 tower specifications

The HP dc7800 Tower is a powerful desktop computer designed for professional and enterprise environments. Known for its stability, performance, and versatility, this model has secured its place in a variety of business settings. Launched in the mid-2000s, it embodies HP’s commitment to quality and innovation.

One of the main features of the HP dc7800 is its form factor. The tower configuration allows for easy upgrades and maintenance, providing ample space for additional hard drives, memory, and other components. This level of accessibility makes it ideal for businesses that need to adapt their systems to changing requirements.

The dc7800 is powered by Intel's Core 2 Duo processors, offering dual-core technology that enhances multitasking capabilities. With clock speeds ranging from 1.8 GHz to 3.0 GHz, this system can handle demanding applications with relative ease. It also supports Intel's vPro technology, which allows for remote management and security features, making it an excellent choice for organizations prioritizing IT control.

Another notable characteristic is the support for up to 8GB of DDR2 RAM. This allows for efficient data processing and improved performance when running multiple applications simultaneously. Additionally, the dc7800 features multiple storage options, accommodating both SATA hard drives and solid-state drives, which can significantly enhance boot times and overall system responsiveness.

Connectivity options on the HP dc7800 are robust. It includes a variety of USB ports, audio jacks, and optional legacy ports, ensuring compatibility with a wide range of peripherals and accessories. Networking capabilities are also prominent, with built-in Gigabit Ethernet providing high-speed internet access.

Furthermore, the desktop tower is designed with energy efficiency in mind. It meets ENERGY STAR certification standards, which not only helps reduce operational costs but also minimizes environmental impact.

Overall, the HP dc7800 Tower embodies a blend of performance, expandability, and energy efficiency, making it a reliable choice for businesses in need of a robust desktop solution. With its legacy of dependability and its suite of modern technologies, it continues to serve as a valuable asset in enterprise environments.

PCI Express Connectors

Figure 4-3. PCI Express Bus Connectors

PCI Express Bus Connector Pinout

Pin

dc7800 tower specifications