M TECHNOLOGY, INC.
M628 STALLION AT
Device Type | Mainboard |
Processor | Pentium II |
Processor Speed | 233/266/300MHz |
Chip Set | Intel |
Video Chip Set | None |
Maximum Onboard Memory | 512MB (EDO & SDRAM supported) |
Maximum Video Memory | None |
Cache | 256/512KB (located on Pentium II CPU) |
BIOS | AMI |
Dimensions | 330mm x 220mm |
I/O Options | 32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connector, USB connector, ATX power connector, AGP slot |
NPU Options | None |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
AGP slot | AGP | Parallel port | CN3 |
ATX power connector | ATX | IDE interface 1 | CN4 |
Reset switch | C1 | IDE interface 2 | CN5 |
Soft off power supply | C2 | Floppy drive interface | CN6 |
Turbo LED | C3 | USB connector | J5 |
IDE interface LED | C4 | PS/2 mouse interface | J11 |
Power LED & keylock | C5 | Wake on LAN connector | JP3 |
Speaker | C6 | CPU fan power | JP10 |
Serial port 1 | CN1 | IR connector | IR1 |
Serial port 2 | CN2 | 32-bit PCI slots | PC1 – PC3 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | CMOS memory normal operation | JP1 | Pins 2 & 3 closed |
CMOS memory clear | JP1 | Pins 1 & 2 closed | |
» | Memory integrity mode select non ECC mode | JP5 | Pins 2 & 3 closed |
Memory integrity mode select ECC mode | JP5 | Pins 1 & 2 closed | |
» | Wake on modem select COM2 | JP6 | Pins 1 & 2 closed |
Wake on modem select COM1 | JP6 | Pins 2 & 3 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 |
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 |
DIMM CONFIGURATION (CON’T) | ||||
Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
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) 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 |
288MB | (1) 16M x 64 | (1) 16M 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 |
384MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 | None |
512MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 |
Note: Board accepts EDO & SDRAM memory. | ||||
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 |
233MHz | 66MHz | 3.5x | Off | On | Off | Off | On |
266MHz | 66MHz | 4x | Off | On | On | On | Off |
300MHz | 66MHz | 4.5x | Off | On | Off | On | Off |
POWER SUPPLY SELECTION | |||
Type | JP8 | JP12 | JP13 |
AT | Pins 1 & 2, 3 & 4 closed | Closed | Open |
ATX | Open | Open | Closed |