M TECHNOLOGY, INC.
M668 STALLION
Device Type | Mainboard |
Processor | Pentium II |
Processor Speed | 233/266/300MHz |
Chip Set | Intel |
Video Chip Set | None |
Maximum Onboard Memory | 1GB (EDO & SDRAM supported) |
Maximum Video Memory | None |
Cache | 256/512KB (located on Pentium II CPU) |
BIOS | AMI |
Dimensions | 305mm x 245mm |
I/O Options | 32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector, AGP slot, RAID slot |
NPU Options | None |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
AGP slot | AGP | Reset switch | J3A |
ATX power connector | ATX | Soft off power supply | J3B |
Parallel port | CN1 | Turbo LED | J3C |
Serial port 2 | CN2 | IDE interface LED | J3D |
Serial port 1 | CN3 | Power LED & keylock | J3E |
USB connector 2 | CN4 | Speaker | J3F |
USB connector 1 | CN5 | Wake on LAN connector | J10 |
PS/2 mouse port | CN6 | CPU fan power | JP8 |
Floppy drive interface | CN7 | CPU fan power | JP11 |
IDE interface 1 | CN8 | 32-bit PCI slots | PC1 – PC3 |
IDE interface 2 | CN9 | RAID slot | SL1 |
IR connector | J2 | ||
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | CMOS memory normal operation | JP3 | Pins 2 & 3 closed |
CMOS memory clear | JP3 | Pins 1 & 2 closed | |
» | Modem wake up COM select COM2 | JP6 | Pins 1 & 2 closed |
Modem wake up COM select COM1 | JP6 | Pins 2 & 3 closed | |
» | DRAM EEC mode select non EEC error | JP9 | Pins 2 & 3 closed |
DRAM EEC mode select EEC error | JP9 | Pins 1 & 2 closed | |
DIMM CONFIGURATION | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
8MB | (1) 1M x 64 | None | None | None |
16MB | (1) 2M x 64 | None | None | None |
16MB | (1) 1M x 64 | (1) 1M x 64 | None | None |
24MB | (1) 2M x 64 | (1) 1M x 64 | None | None |
24MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 | None |
32MB | (1) 4M x 64 | None | None | None |
32MB | (1) 2M x 64 | (1) 2M x 64 | None | None |
32MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 |
40MB | (1) 4M x 64 | (1) 1M x 64 | None | None |
48MB | (1) 4M x 64 | (1) 2M x 64 | None | None |
48MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 | None |
DIMM CONFIGURATION (CON’T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
64MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 |
64MB | (1) 8M x 64 | None | None | None |
64MB | (1) 4M x 64 | (1) 4M x 64 | None | None |
72MB | (1) 8M x 64 | (1) 1M x 64 | None | None |
80MB | (1) 8M x 64 | (1) 2M x 64 | None | None |
96MB | (1) 8M x 64 | (1) 4M x 64 | None | None |
96MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 | None |
128MB | (1) 16M x 64 | None | None | None |
128MB | (1) 8M x 64 | (1) 8M x 64 | None | None |
128MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 |
136MB | (1) 16M x 64 | (1) 1M x 64 | None | None |
144MB | (1) 16M x 64 | (1) 2M x 64 | None | None |
152MB | (1) 16M x 64 | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 |
160MB | (1) 16M x 64 | (1) 4M x 64 | None | None |
176MB | (1) 16M x 64 | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 |
192MB | (1) 16M x 64 | (1) 8M x 64 | None | None |
192MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 | None |
224MB | (1) 16M x 64 | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 |
256MB | (1) 32M x 64 | None | None | None |
256MB | (1) 16M x 64 | (1) 16M x 64 | None | None |
256MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 |
272MB | (1) 16M x 64 | (1) 16M x 64 | (1) 1M x 64 | (1) 1M x 64 |
280MB | (1) 32M x 64 | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 |
288MB | (1) 16M x 64 | (1) 16M x 64 | (1) 2M x 64 | (1) 2M x 64 |
304MB | (1) 32M x 64 | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 |
320MB | (1) 16M x 64 | (1) 16M x 64 | (1) 4M x 64 | (1) 4M x 64 |
320MB | (1) 16M x 64 | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 |
352MB | (1) 32M x 64 | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 |
384MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 | None |
448MB | (1) 32M x 64 | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 |
512MB | (1) 32M x 64 | (1) 32M x 64 | None | None |
512MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 |
640MB | (1) 32M x 64 | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 |
768MB | (1) 32M x 64 | (1) 32M x 64 | (1) 32M x 64 | None |
1024MB | (1) 32M x 64 | (1) 32M x 64 | (1) 32M x 64 | (1) 32M x 64 |
Note: Board accepts EDO & SDRAM memory. Maximum SDRAM is 512MB. Maximum EDO is 1GB. | ||||
CACHE CONFIGURATION |
Note: 256KB/512KB cache is located on the Pentium II CPU. |
CPU SPEED SELECTION | ||||||||
CPU speed | Clock speed | Multiplier | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 |
233MHz | 66MHz | 3.5x | On | Off | Off | On | Off | Off |
266MHz | 66MHz | 4x | Off | On | On | On | Off | Off |
300MHz | 66MHz | 4.5x | Off | On | Off | On | Off | Off |