AT&T NCR 3249-1020 Intel Pentium 75MHz Desktop PC 16MB RAM 850MB HDD ISA PCI

AT&T NCR 3249-1020 Intel Pentium 75MHz Desktop PC 16MB RAM 850MB HDD ISA PCI

The AT&T NCR 3249-1020 is a mid-1990s desktop computer built around the Intel Pentium 75 MHz processor. Manufactured under the AT&T/NCR brand at a time when AT&T's computer division and NCR operated together, this unit represents the business-grade desktop hardware of the Windows 3.x and early Windows 95 era. It features a mix of ISA and PCI expansion slots, giving it flexibility for both legacy ISA peripherals and PCI add-in cards of the period. No operating system is currently installed.

Specifications & What's Included

• Processor: Intel Pentium 75 MHz (P75)
• RAM: 16 MB via 72-pin SIMM
• Hard Drive: 850 MB (no OS installed)
• Floppy Drive: 3.5-inch
• Expansion Slots: 3 × ISA 16-bit, 2 × PCI
• Serial Ports: 2 × DB-9 (COM1, COM2)
• Parallel Port: 1 × DB-25 (LPT)
• Video Output: HD-15 VGA
• Keyboard Port: DIN-5
• Mouse Port: DIN-5
• Base Memory: 640 KB conventional
• CPU Cache: Present; configurable — can be disabled
• AC Power Input: 100–130V / 200–240V, 50–60Hz (universal input, switchable)
• Form Factor: Desktop
• Model Number: 3249-1020
• No operating system, no keyboard, no mouse, no monitor, and no cables are included

Applications

The NCR 3249 series was part of AT&T/NCR's line of business desktop PCs from the mid-1990s, designed for corporate workstation and office computing tasks. Machines of this generation — built around the first-generation Pentium (P75 to P133) — ran MS-DOS, Windows 3.1, and Windows 95, and were widely deployed in enterprise environments for word processing, spreadsheet work, database access, and basic CAD. Today, this class of hardware is sought after by vintage PC enthusiasts, retro computing hobbyists, and industrial users who maintain older software or hardware in active service. The ISA expansion slots are particularly valuable for legacy industrial, scientific, and test-and-measurement applications where ISA-bus interface cards — for data acquisition, motion control, serial communication, or proprietary instruments — are still in use and no longer installable in modern PCI/PCIe systems. The 3 ISA slots and 2 PCI slots make this unit capable of hosting a versatile mix of period-correct expansion hardware. The universal AC input (100–240V) makes it usable worldwide.