PC CHIPS MANUFACTURING, LTD.
M748
| Device Type | Mainboard |
| Processor | Celeron/Pentium II/Pentium III |
| Processor Speed | 233/266/300/333/350/366/400/433/450/466/500MHz |
| Chip Set | Unidentified |
| Video Chip Set | Unidentified |
| Audio Chip Set | Unidentified |
| Maximum Onboard Memory | 768MB (SDRAM supported) |
| Maximum Audio Memory | Unidentified |
| Cache | 0/128/256/512KB (located on the CPU) |
| BIOS | AMI |
| Dimensions | 220mm x 220mm |
| I/O Options (backplane) | 32-bit PCI slots (3), floppy drive interface, game interface, sound interface, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), VGA interface, IR connector, ATX power connector, audio in - CD-ROM (2), SPDIF connector |
CONNECTIONS |
|||
| Purpose | Location |
Purpose | Location |
| ATX power connector | ATX |
Keylock | J6/Pins 8 & 10 |
| Serial port 1 | COM1 | Turbo LED | J6/Pins 13 & 14 |
| Serial port 2 | COM2 | IDE interface | J6/Pins 15 & 16 |
| Floppy drive interface | FDC1 | Reset switch | J6/Pins 17 & 18 |
| IDE interface 1 | IDE1 | Power button | J6/Pins 21 & 22 |
| IDE interface 2 | IDE2 | SPDIF connector | J7 |
| IR connector | IR1 | Digital audio connector | J8 |
| ATX form card connector | J1 | CPU fan power | JP4 |
| Audio in - CD-ROM (Panasonic) | J2 | Wake-on-LAN connector | JP3 |
| Game interface | J3 | Modem Module connector | JP9 |
| Sound interface | J3 | PS/2 mouse interface | JP10 |
| Audio in - CD-ROM (Sony) | J4 | 32-bit PCI slots | PC1 - PC3 |
| Speaker | J6/Pins 1, 3, 5 & 7 | Parallel port | PRN1 |
| Power LED | J6/Pins 2, 4 & 6 | VGA interface | VGA1 |
| Note: The ATX form card supplies 2 USB connector, a PS/2mouse and an IR connector. | |||
USER CONFIGURABLE SETTINGS |
|||
Function |
Label |
Position |
|
» |
PWRON keyboard disabled | JP1 | Pins 1 & 2 closed |
| PWRON keyboard enabled | JP1 | Pins 2 & 3 closed | |
» |
CMOS memory normal operation | JP2 |
Pins 1 & 2 closed |
| CMOS memory clear | JP2 |
Pins 2 & 3 closed |
|
| » | Onboard sound pro enabled | JP7 |
Pins 1 & 2 closed |
| Onboard sound pro disabled | JP7 |
Pins 2 & 3 closed | |
| » | SPDIF OUT signal level selector 0.5v | JP8 | Open |
|
SPDIF OUT signal level selector 5.0v | JP8 | Closed |
| DIMM CONFIGURATION | |||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
8MB |
(1) 1M x 64 |
None |
None |
16MB |
(1) 1M x 64 |
(1) 1M x 64 |
None |
16MB |
(1) 2M x 64 |
None |
None |
24MB |
(1) 1M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
32MB |
(1) 2M x 64 |
(1) 2M x 64 |
None |
32MB |
(1) 4M x 64 |
None |
None |
32MB |
(1) 2M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
48MB |
(1) 2M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
48MB |
(1) 4M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
64MB |
(1) 4M x 64 |
(1) 4M x 64 |
None |
64MB |
(1) 8M x 64 |
None |
None |
64MB |
(1) 4M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
80MB |
(1) 8M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
96MB |
(1) 4M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
96MB |
(1) 8M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
128MB |
(1) 8M x 64 |
(1) 8M x 64 |
None |
128MB |
(1) 16M x 64 |
None |
None |
128MB |
(1) 8M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
144MB |
(1) 16M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
160MB |
(1) 16M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
192MB |
(1) 8M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
192MB |
(1) 16M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
256MB |
(1) 16M x 64 |
(1) 16M x 64 |
None |
256MB |
(1) 32M x 64 |
None |
None |
256MB |
(1) 16M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
272MB |
(1) 32M x 64 |
(1) 1M x 64 |
(1) 1M x 64 |
288MB |
(1) 32M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
320MB |
(1) 32M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
384MB |
(1) 16M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
384MB |
(1) 32M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
512MB |
(1) 32M x 64 |
(1) 32M x 64 |
None |
512MB |
(1) 32M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
768MB |
(1) 32M x 64 |
(1) 32M x 64 |
(1) 32M x 64 |
| Note: Board supports SDRAM memory. | |||
CACHE CONFIGURATION |
| Note: 256KB/512KB cache is located on the Pentium II/III CPU. 128KB cache is located on the Celeron 300A & and greater CPUs. |