ACER, INC.
V55
|
Device Type |
Mainboard |
|
Processor |
CX M1/AM K5/Pentium |
|
Processor Speed |
75/90/100/120/133/150/166/200MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
128MB (EDO supported) |
|
Maximum Video Memory |
None |
|
Cache |
256/512KB |
|
BIOS |
Unidentified |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), cache slot, IR connector, USB connector |
|
NPU Options |
None |
|
CONNECTIONS |
|||
|
Purpose |
Location |
Purpose |
Location |
|
Standby power connector |
CN1 |
Power LED & keylock |
CN16/pins 1 – 5 |
|
Serial port 2 |
CN2 |
Speaker |
CN16/pins 7 – 10 |
|
Serial port 1 |
CN3 |
Green PC LED |
CN16/pins 12 & 13 |
|
Parallel port |
CN4 |
Reset switch |
CN16/pins 19 & 20 |
|
Floppy drive interface |
CN5 |
Green PC connector |
CN17 |
|
IDE interface 2 |
CN6 |
Software shutdown switch |
CN18 |
|
IDE interface 1 |
CN9 |
IR connector |
CN19 |
|
PS/2 mouse port |
CN11 |
IDE interface LED |
CN20 |
|
USB connector |
CN12 |
32-bit PCI slots |
PC1 – PC4 |
|
CPU power shorting block |
CN13 |
Cache slot |
SL1 |
|
CPU fan power |
CN14 |
|
|
|
USER CONFIGURABLE SETTINGS |
|||
|
Function |
Label |
Position |
|
|
» |
BIOS type select flash |
JP4 |
Pins 2 & 3 closed |
|
|
BIOS type select EPROM |
JP4 |
Pins 1 & 2 closed |
|
SIMM CONFIGURATION |
||
|
Size |
Bank 0 |
Bank 1 |
|
8MB |
(2) 1M x 36 |
None |
|
16MB |
(2) 2M x 36 |
None |
|
16MB |
(2) 1M x 36 |
(2) 1M x 36 |
|
24MB |
(2) 2M x 36 |
(2) 1M x 36 |
|
32MB |
(2) 4M x 36 |
None |
|
32MB |
(2) 2M x 36 |
(2) 2M x 36 |
|
40MB |
(2) 4M x 36 |
(2) 1M x 36 |
|
48MB |
(2) 4M x 36 |
(2) 2M x 36 |
|
64MB |
(2) 8M x 36 |
None |
|
64MB |
(2) 4M x 36 |
(2) 4M x 36 |
|
72MB |
(2) 8M x 36 |
(2) 1M x 36 |
|
80MB |
(2) 8M x 36 |
(2) 2M x 36 |
|
96MB |
(2) 8M x 36 |
(2) 4M x 36 |
|
128MB |
(2) 8M x 36 |
(2) 8M x 36 |
|
CACHE CONFIGURATION |
||
|
Size |
Bank 0 |
SL1 |
|
256KB |
(2) 32K x 32 |
Not installed |
|
512KB |
(2) 32K x 32 |
256KB module installed |
|
CACHE JUMPER CONFIGURATION |
||
|
Size |
JP8 |
JP9 |
|
256KB |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
512KB |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
CACHE TYPE CONFIGURATION |
|
|
Type |
JP10 |
|
» M1 1 + 4 mode |
Pins 2 & 3 closed |
|
M1 linear burst mode |
Pins 1 & 2 closed |
|
CPU CLOCK FREQUENCY SELECTION |
||
|
Clock speed |
S1/3 |
S1/4 |
|
50MHz |
On |
On |
|
60MHz |
Off |
On |
|
66MHz |
On |
Off |
|
CPU BUS RATIO SELECTION (CYRIX) |
||
|
Bus ratio |
S1/1 |
SW1/2 |
|
1 |
On |
On |
|
2 |
Off |
On |
|
3 |
Off |
Off |
|
4 |
On |
Off |
|
CPU BUS RATIO SELECTION (AMD) |
||
|
Bus ratio |
S1/1 |
SW1/2 |
|
2 |
On |
On |
|
2 |
Off |
On |
|
3/2 |
On |
Off |
|
3/2 |
Off |
Off |
|
CPU BUS RATIO SELECTION (INTEL) |
||
|
Bus ratio |
S1/1 |
SW1/2 |
|
2 |
Off |
On |
|
3 |
On |
Off |
|
3/2 |
Off |
Off |
|
5/2 |
On |
On |
|
CPU VOLTAGE SELECTION |
|||
|
Voltage |
V core |
JP6 |
JP7 |
|
» 3.3v |
2.8v |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
3.5v |
2.5v |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
BIOS SELECTION |
|
|
Type |
JP5 |
|
NC |
Pins 1 & 2 closed |
|
» 29E010 |
Pins 2 & 3 closed |
|
28F001 |
Pins 3 & 4 closed |