The Compaq EVO D51S/P2.4/40/256c is one of the model numbers for the Small Form Factor version of the Compaq EVO D510. The Small Form Factor was one of the four models available for the desktop PC released under the Hewlett-Packard subsidiary Compaq.
The Compaq EVO D51S/P2.4/40/256c was named according to its components. The "P2.4" stood for its Intel Pentium 4 processor, the "40" represented the number of gigabytes (GB) of its hard drive, the "256" denoted the amount of GB that constituted its system memory, and the "c" represented its CD-ROM optical drive.
The Compaq EVO D51S/P2.4/40/256c also came with a 3.5-inch 1.44 MB floppy disk drive, a PCI card and 56k modem for networking, Microsoft Windows 2000 or XP operating system, and Intel/Nvidia-enabled video and graphics. Its interfaces included four USB 2.0 ports, two serial ports, two PS/2 connectors for its keyboard and mouse, and a VGA connector for analogue video support.
The Compaq EVO D51S/P2.4/40/256c measured 3.9 inches by 13.1 inches by 14.4 inches. HP recorded its weight at around 9.07kg.