HP Compaq DC7100

Processors

 * Intel Pentium 4 Processor 520 with HT Technology (2.8-GHz, 1 MB L2 cache, 800 MHz FSB)
 * Intel Pentium 4 Processor 530 with HT Technology (3.0-GHz, 1 MB L2 cache, 800 MHz FSB)
 * Intel Pentium 4 Processor 540 with HT Technology (3.2-GHz, 1 MB L2 cache, 800 MHz FSB)
 * Intel Pentium 4 Processor 550 with HT Technology (3.4-GHz, 1 MB L2 cache, 800 MHz FSB)
 * Intel Pentium 4 Processor 560 with HT Technology (3.6-GHz, 1 MB L2 cache, 800 MHz FSB) (not available for USDT towers)

Chipset

 * Intel 915 series Express
 * Intel 915G Express

Hard Drive

 * 40GB Serial ATA Hard Drive (7200 rpm)
 * 80GB Serial ATA Hard Drive (7200 rpm)
 * 160GB Serial ATA Hard Drive (7200 rpm)
 * 2nd hard drive, 40GB Serial ATA Hard Drive (7200 rpm) (not available for USDT models)
 * 2nd hard drive, 80GB Serial ATA Hard Drive (7200 rpm) (not available for USDT models)
 * 2nd hard drive, 160GB Serial ATA Hard Drive (7200 rpm) (not available for USDT models)

Memory
NOTE: The maximum memory for this PC is 4GB of RAM
 * 256-MB DDR Synch Dram PC3200 (400-MHz) Non ECC (1 x 256)


 * 256-MB DDR Synch DRAM PC3200 (400MHz) non-ECC (2x128)


 * 512-MB DDR Synch Dram PC3200 (400-MHz) Non ECC (1 x 512)


 * 512-MB DDR Synch Dram PC3200 (400-MHz) Non ECC (2 x 256)


 * 1-GB DDR Synch Dram PC3200 (400-MHz) Non ECC (1 x 1GB)


 * 1-GB DDR Synch Dram PC3200 (400-MHz) Non ECC (2 x 512)


 * 1.5-GB DDR Synch Dram PC3200 (400-MHz) Non ECC (2 x 256, 2 x 512) (not supported on USDT models)


 * 2-GB DDR Synch Dram PC3200 (400-MHz) Non ECC (2 x 1GB)


 * 2-GB DDR Synch Dram PC3200 (400-MHz) Non ECC (4 x 512) (not supported on USDT models)


 * 3-GB DDR Synch Dram PC3200 (400-MHz) Non ECC (3x1GB) (not supported on SFF or CMT models)


 * 4-GB DDR Synch Dram PC3200 (400-MHz) Non ECC (4 x 1GB) (not supported on USDT models)

Diskette and Zip Drives
NOTE: All of the Diskette and Zip Drives are not supported on USDT models
 * 1.44-MB Diskette Drive
 * Zip 250 for 3.5" Drive Bay
 * Zip 250 for 5.25" Drive Bay

USB Drives

 * 128MB USB Drive Key (USB 2.0)

Optical Drives
NOTE: All of The Optical Drives listed here are not supported on USDT models
 * 48X CD-ROM Drive
 * 16X/40X DVD-ROM with +R Read
 * 48X/32X/48X CD-RW Drive
 * 48X/32X/48X/16X Combo CD-RW/DVD-ROM Drive
 * 8X 4.7GB DVD+R/RW Drive

Multibay

 * Multibay Drive Adapter (not supported on USDT models)
 * MultiBay 24X CD-ROM Drive
 * MultiBay 24X/24X/24X/8X DVD-CDRW Combo Drive
 * MultiBay 8X/24X DVD-ROM with +R Drive
 * Multibay 1.44MB diskette drive (not supported on SFF or USDT models)

Modem

 * Agere PCI high speed 56K modem

Audio

 * SoundMax Digital AC97 integrated audio with internal speaker

NIC

 * Integrated Broadcom NetXtreme
 * Intel Pro 1000 MT Gigabit NIC

Miscellaneous

 * IEEE 1394 PCI Card
 * PCI extender card for CMT (adds 2 PCI) (not supported on USDT and SFF models)
 * Serial & parallel I/O adapter (not supported on USDT and SFF models)
 * 2nd serial port option (not supported on USDT models)
 * Tower stand (not supported on CMT models)

Graphics

 * Integrated Intel Graphics Media Accelerator 900 graphics
 * DVI ADD2 card full height (not supported on USDT or SFF models)
 * DVI ADD2 card low profile (not supported on USDT or CMT models)
 * ATI RADEON X300 SE PCI Express 64-MB DDR singlehead VGA with TV out and low profile bracket (not supported on USDT or CMT models)
 * ATI RADEON X300 SE PCI Express 128-MB DDR singlehead DVI with TV out and low profile bracket (not supported on USDT or CMT models)
 * ATI RADEON X300 SE PCI Express 64-MB DDR singlehead VGA with TV out and full height bracket (not supported on USDT or SFF models)
 * ATI RADEON X300 SE PCI Express 128-MB DDR singlehead DVI with TV out and full height bracket (not supported on USDT or SFF models)
 * NVIDIA Quadro NVS 280 64MB PCI (not supported on USDT models)
 * NVIDIA Quadro 50NVS PCI 64Mb DVI with TV-Out

Security

 * Solenoid and Hood Sensor - X X (not supported on USDT models)
 * Hood Sensor (not supported on SFF and CMT models)
 * TPM security module
 * Chassis clamp lock, universal, with cable

Operating Systems

 * Microsoft Windows XP Professional
 * Microsoft Windows XP Home Edition
 * FreeDOS
 * SuSE Linux Personal 9.2 OEM (delivered on CDs with system, not pre-installed)

Source
https://data2.manualslib.com/pdf/8/721/72042-hp/dc7100.pdf?dc966b4622420443cdc437fc31bb52b4