How to Install a PCI Serial Port on an HP Compaq dc7700p small form factor

Try looking here, I don't know your OS? :http://h20000.www2.hp.com/bizsupport/TechSupport/ProductList.jsp?lang=en&cc=us&taskId=135&prodTypeId=12454&prodSeriesId=454811

Depending on your form factor your serial number is located on the 'top' panel. See page 14 of the user guide here:http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c03347207/c03347207.pdf
It is different for each individual machine.

Can I upgrade CPU to an Intel Core2 dual processor on the HP Compaq dc5000 Small Form Factor PC Desktop?

You may need to download and install the driver for the network card.

Compaq.com is where I would go first.

any low profile pci ethernet card should fit in your SFF (small form factor computer)
try amazon
from £6
http://www.google.co.uk/products?q=low+profile+pci+ethernet+card&hl=en&aq=f

http://www.systemrequirementslab.com/ref…

please check the link provided for the serial port driver for your hp compaq
click here
hope this helps . . .

I think is not possible, because no space for additional harddisk, casing is too small, but if you release the cdrom, you can plug additional harddisk to cdrom place, but no screw mount to casing

Try to use this program to format it.


Utilityfor formatting and creating loading USB Flash (it is supported NTFS,FAT, FAT32). It works with the devices through port USB 2.0. For theload from flesh in BASIC INPUT-OUTPUT SYSTEM Setup it is necessary toestablish as the first loader USB-HDD Device. banner_header VERSION: 2.1.8 Rev. A
DESCRIPTION:
This SoftPaq contains a Windows-based format utility for the HP Drive Key or
DiskOnKey USB 2.0 device.

PURPOSE: Routine
SOFTPAQ NUMBER: SP27608
SUPERSEDES: SP27213, SP27135
EFFECTIVE DATE: May 17, 2004
CATEGORY: Driver - Storage
SSM SUPPORTED: No

PRODUCT TYPE(S):
Desktops

PRODUCT MODEL(S):
HP Compaq d220 microtower: All Models
HP Compaq d230 microtower: All Models
HP Compaq d240 microtower: All Models
HP Compaq d248 microtower: All Models
HP Compaq d330 desktop: All Models
HP Compaq d330 microtower: All Models
HP Compaq d330 slim tower: All Models
HP Compaq d338 microtower: All Models
HP Compaq d530 convertible minitower: All Models
HP Compaq d530 small form factor: All Models
HP Compaq d530 ultra-slim desktop: All Models
HP Compaq d538 convertible minitower: All Models
HP Compaq d538 small form factor: All Models
HP Compaq dc5000 microtower: All Models
HP Compaq dc5000 small form factor: All Models
HP Compaq dc7100 convertible minitower: All Models
HP Compaq dc7100 small form factor: All Models
HP Compaq dc7100 ultra-slim desktop: All Models
HP Compaq dx2000 microtower: All Models
HP Compaq dx6100 microtower: All Models
HP Compaq dx6100 slim tower: All Models
HP Compaq dx6120 slim tower: All Models
HP d325 microtower: All Models
HP d325 slim tower: All Models
HP RP5000: All Models
N/A: All Models

OPERATING SYSTEM(S):
Windows XP Home Edition
Windows XP Professional

LANGUAGE(S):
Global

ENHANCEMENTS:
New Windows-based interface. (For DOS-based interface, download SoftPaq
SP27214.)

FIXES:
- Allows creation of a FAT32 volume larger than 32 GB.
- Fixes installation issue where installation process stopped after the earlier
version of software was uninstalled and the new software was not automatically
installed. The installation process now restarts automatically to install the
new software after uninstalling the older version.

PREREQUISITES:
- Requires an HP Drive Key or DiskOnKey device plugged into a USB 2.0 port.

HOW TO USE:
1. Plug the HP Drive Key device into an available USB 2.0 port.

2. Download the SoftPaq .EXE file to a directory on your hard drive.

3. Execute the downloaded file and follow the on-screen instructions. If
prompted to overwrite any files, answer Yes to all to continue installation.

http://www.maxiwarez.com/2007/12/21/hp_usb_bootable_format_tool_v.2.1.8.html

You just have to look for a "low-profile" PCI card. Creative makes one, Audigy SE SB0570LPVP



Search that for a vendor, or low-profile for other manufacturers.