Brand: Intel
Category: Motherboard
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for Pentium II
Uploaded: April 20, 2026, 7:38 p.m.
The system board supports Intel Pentium II CPUs, dual processors, and 66 MHz bus frequency. It features a 72-bit DRAM support with EDO and SDRAM DIMMs, and an Accelerated Graphics Port (AGP) interface for enhanced graphics. The PIIX4 implements PCI-to-PCI bridge, PCI IDE, USB, and power management. It supports both ISA and PCI local bus architectures with multiple expansion slots. Memory banks support up to 512 MB using 168-pin DIMMs (EDO and SDRAM). It includes Fast SCSI-II and Wide SCSI interfaces, enhanced IDE, serial, parallel, diskette, PS/2 connectors. Optional features include ASM Pro for server management and Remote Diagnostic Management (RDM).
Troubleshooting and error codes
| Message | Action |
| CMOS Battery Error | Replace the battery or contact your dealer. |
| CMOS Checksum Error | Run Setup. |
| CPU BIOS Update Code Mismatch | Contact your dealer. |
| Diskette Drive Controller Error or Not Installed | Check and connect the control cable to the diskette controller. |
| Diskette Drive Error | Check the CMOS settings in Setup and the diskette drive cable connections. |
| Diskette Drive A Type Mismatch | Run Setup and select the proper drive type. |
| Diskette Drive B Type Mismatch | Run Setup and select the proper drive type. |
| Equipment Configuration Error | Modify DRAM configuration to agree with one of the options in Table 1-4. |
| Hard Disk Controller Error | Run Setup. |
| Hard Disk 0 Error | Check all cable connections. Replace hard disk. |
| Hard Disk 1 Error | Check all cable connections. Replace hard disk. |
| Hard Disk 0 Extended Type Error | Run Setup. |
| Hard Disk 1 Extended Type Error | Run Setup. |
| I/O Parity Error | Contact your dealer. |
| Keyboard Error or No Keyboard Connected | Check and connect the keyboard to the system unit. |
| Keyboard Interface Error | Replace the keyboard or contact your dealer. |
| Memory Error at: MMMM:SSSS:OOO (W:XXXX, R:YYYY) where: M: MB, S: Segment, O: Offset, X/Y: write/read pattern | Check DIMMs on the system board. Contact your dealer. |
| Memory Size Mismatch | Check the memory size based on the system specifications. Check the internal cable connections. If you are sure that connections and values are correct, ignore the message. If the message reappears, ask for technical assistance. |
| CPU Clock Mismatch | Check the memory size based on the system specifications. Check the internal cable connections. If you are sure that connections and values are correct, ignore the message. If the message reappears, ask for technical assistance. |
| Onboard Serial Port 1 Conflict | Run Setup and disable the port. |
| Onboard Serial Port 2 Conflict | Run Setup and disable the port. |
| Onboard Parallel Port Conflict | Run Setup and disable the port. |
| Pointing Device Error | Check and connect pointing device. |
| Pointing Device Interface Error | Replace the pointing device or contact your dealer. |
| Press F1 key to continue or Ctrl-Alt-Esc for Setup | Press F1 or CTRL + ALT + ESC to enter Setup. |
| Real Time Clock Error | Run Setup and set the time and date. |
| Press Esc to turn off NMI, any key to reboot | Press ESC to disregard the NMI error. Press any other key to reboot the system. |
| Real-time Clock Error | Run Setup. |