HP and Compaq Desktop PCs - Motherboard Specifications, MS-7525 (BostonL)
Figure 1: The MS-7525 (BostonL) motherboard
Socket type: 775
Motherboard supports the following processor upgrades:
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Dual channel memory architecture
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Two 240-pin DDR2 DIMM sockets
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Supported DIMM types:
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PC2-5300 (667 MHz)
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PC2-6400 (800 MHz)
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Non-ECC memory only, unbuffered
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Supports 2GB DDR2 DIMMs
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Supports up to 4 GB* on 32 bit PCs
NOTE: *Actual available memory may be less
*Integrated video is not available if a graphics card is installed.
*Integrated video is not available if a graphics card is installed.
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Interface: Integrated into motherboard
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Technology: Realtek 8101E
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Data transfer speeds: up to 10/100Mb/s
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Transmission standards:10-Base-T Ethernet
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One PCI Express x16
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Two PCI Express x1
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One PCI
Figure 2: Back I/O panel
1 - PS/2 mouse (green)
2 - Video Graphics Adapter
3 - RJ-45 Network (LAN)
4 - Audio: Line In port (light blue)
5 - Audio: Line Out (lime)
6 - Audio: Microphone (pink)
7 - USB 2.0: 4
8 - PS/2 keyboard (purple)
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One 24-pin ATX power connector
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One 4-pin ATX power connector
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Four SATA connectors
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One floppy drive connector
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Two 12v fan connectors for CPU fan and PC fan
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One 9-pin header for power button, reset button, power LED, and HDD LED
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Two USB 2.0 headers
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One SPDIF audio output connector
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One 9-pin audio header for headphone-out and microphone-in (yellow, Vista capable, requires matching front audio jack module)
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One jumper for resetting BIOS settings
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One jumper to disable BIOS password checking
Figure 3: layout
CAUTION: Do not change any jumper setting while the computer is on. Damage to the motherboard can result.
This motherboard has jumpers to clear the Real Time Clock (RTC) RAM in CMOS. In the default (normal) position the jumper is on pins 1-2.
To clear CMOS, follow these steps:
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Temporarily set jumper JBAT1 to pins 2-3.
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Wait 5-10 seconds and then return the jumper to pins 1-2.
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On the next startup, enter BIOS setup to reset any custom BIOS settings.
The BIOS password is used to protect BIOS settings from unwanted changes.
To erase the BIOS password follow these steps:
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Turn OFF the computer and unplug the power cord.
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Remove the JPWD1 jumper.
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Connect the power cord and turn on the PC.
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Enter BIOS Setup Menu, you will find the previous password is cleared.
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Turn off the PC and unplug the power cord.
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Replace the JPWD1 jumper.
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Turn on the PC and set a new password if necessary.
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