Description
Gateway 4000253 Socket 7 Motherboard AA666761-205 ATX Intel SMC
The Gateway 4000253 is a Socket 7 ATX system board carrying part number AA666761-205, originally installed in Gateway desktop systems from the mid-to-late 1990s. It accepts the full range of Socket 7 processors — Intel Pentium and Pentium MMX, AMD K6/K6-2, and Cyrix MII — and features an Intel chipset with an SMC super I/O controller handling the rear-panel legacy ports.
Specifications & What's Included
- Manufacturer: Gateway
- Part Number: 4000253
- Board Part Number: AA666761-205
- CPU Socket: Socket 7 (ZIF, zero-insertion-force lever)
- Form Factor: ATX
- Chipset: Intel (markings partially legible on board)
- Super I/O Controller: SMC
- Memory Slots: 4x SIMM (CAM1–CAM4, CRM1–CRM3 designations visible on PCB)
- Expansion Slots: 3x PCI, 3x ISA
- Storage Connectors: 2x IDE (40-pin), 1x Floppy (34-pin)
- Rear I/O: 2x USB (stacked), 1x DB-9 serial, 1x DB-25 parallel port
- Power Connector: ATX main power connector
- Board Revision: F139761 (silkscreen visible in photos)
Applications
Socket 7 was Intel's last socketed CPU platform shared across multiple processor manufacturers, supporting Intel Pentium and Pentium MMX, AMD K6, K6-2, and K6-III, and Cyrix processors. Gateway used boards like the 4000253 in their mid-range desktop towers during roughly 1996–1999, a period when the PC industry was transitioning from ISA-only expansion to PCI-dominant designs — this board reflects that transition with its mix of three PCI and three ISA slots. Today these boards are sought by retro computing enthusiasts, system restorers maintaining period-correct Gateway machines, and collectors building late-1990s DOS/Windows 9x gaming or productivity systems. The onboard USB support (unusual for early Socket 7 boards) and the ATX form factor make it more practical than earlier Baby-AT designs of the same era.
This Gateway 4000253 Socket 7 Motherboard (AA666761-205) has been tested at our facility and is in good working condition. The board is clean overall with normal handling wear typical of used desktop components. All slots, connectors, and rear-panel ports appear intact and undamaged. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Gateway |
Model: |
4000253 |
MPN: |
AA666761-205 |
Secondary Model: |
AA666761-205 |
SKU: |
18019 |
Type: |
Motherboard / System Board |
Socket Type: |
Socket 7 |
Form Factor: |
ATX |
Chipset: |
Intel (chipset markings partially legible) |
I/O Controller: |
SMC |
Expansion Slots: |
3x PCI, 3x ISA |
Memory Slots: |
4x SIMM (CAM slots visible on PCB) |
Memory Type: |
SIMM |
Storage Connectors: |
Two IDE (40-pin), one Floppy (34-pin) |
USB Ports: |
2x USB (rear panel, stacked) |
Serial Ports: |
1x DB-9 serial port (rear panel) |
Parallel Port: |
1x DB-25 parallel port (rear panel) |
Compatible With: |
Gateway desktop systems, Socket 7 CPUs |
CPU Compatibility: |
Intel Pentium, AMD K6, Cyrix compatible Socket 7 |
Country/Region of Manufacture: |
United States |
Condition Notes: |
This Gateway 4000253 Socket 7 Motherboard (AA666761-205) has been tested at our facility and is in good working condition. Board is clean with normal handling wear. All slots and connectors appear intact. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
