AST RESEARCH, INC.
BRAVO 5133 SABRE LC (503415-101)
| Device Type | Mainboard |
| Processor | Pentium/Pentium MMX |
| Processor Speed | 133/166/200/233MHz |
| Chip Set | Intel 440TX |
| Video Chip Set | ATI |
| Maximum Onboard Memory | 256MB (SDRAM supported) |
| Maximum Video Memory | 4MB |
| Cache | 256KB (located on the CPU) |
| BIOS | Unidentified |
| Dimensions | Unidentified |
| I/O Options | 16-bit ISA slots (2), 32-bit PCI slots (3), PS/2 mouse port, PS/2 keyboard port, parallel port, serial ports (2), VGA port, IR connector, USB ports (2), ATX power connector, Floopy drive interface, IDE interfaces (2) |
CONNECTIONS |
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| Purpose | Location |
Purpose | Location |
| USB port 1 | CN1 | Serial port 2 | CN7 |
| USB port 2 | CN2 | Parallel port | CN8 |
| VGA port | CN3 | VESA feature connector | J10 |
| PS/2 keyboard port | CN4 | CPU fan power | J22 |
| PS/2 mouse port | CN5 | Video memory upgrade connection | U16 |
| Serial port 1 | CN6 | ||
USER CONFIGURABLE SETTINGS |
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Function |
Label |
Position |
|
» |
Factory configured - do not alter | J14 |
Unidentified |
| Password enabled | J17 | Closed | |
| Password disabled | J17 | Open | |
|
Flash BIOS upgrade normal operation | J18 |
Closed |
| Flash BIOS upgrade enabled | J18 |
Open |
|
|
BIOS setup access enabled | J20 | Closed |
| BIOS setup access disabled | J20 | Open |
|
DIMM CONFIGURATION |
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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) 16M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
| Note: Board supports SDRAM memory. | |||
CPU SPEED SELECTION (PENTIUM) |
|||||
Speed |
J13 | J15 | J16 | J19 | JB1 |
166MHz |
2 & 3 | Open | 2 & 3 | 1 & 2, 3 & 4, 5 & 6 | 2 & 4, 3 & 5 |
| 200MHz | 2 & 3 | Open | 2 & 3 | 1 & 2, 3 & 4, 5 & 6 | 3 & 5, 4 & 6 |
| 233MHz | 2 & 3 | Open | 2 & 3 | 1 & 2, 3 & 4, 5 & 6 | & 3, 4 & 6 |
| Note: Pins designated should be in the closed position. | |||||
CPU SPEED SELECTION (PENTIUM MMX) |
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Speed |
J13 | J15 | J16 | J19 | JB1 |
133MHz |
2 & 3 | 1 & 2, 3 & 4, 5 & 6 | 1 & 2 | Open | 3 & 5, 4 & 6 |
| 166MHz | 2 & 3 | 1 & 2, 3 & 4, 5 & 6 | 1 & 2 | Open | 1 & 3, 4 & 6 |
| 200MHz | 2 & 3 | 1 & 2, 3 & 4, 5 & 6 | 1 & 2 | Open | 1 & 3, 2 & 4 |
| Note: Pins designated should be in the closed position. | |||||
CONNECTIONS |
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| Purpose | Location |
Purpose | Location |
| ATX power connector | ATX |
Tachometer fan power | J3 |
| Floppy drive interface | FDD | Fan power - not used | J4 |
| IDE interface 1 | IDE1 | Modem in - not supported | J10 |
| IDE interface 2 | IDE2 | Audio in - CD-ROM - not supported | J11 |
| 16-bit ISA slots | IS1 - IS2 | 32-bit PCI slots | PC1 - PC3 |
| Front panel connector | J1 | ||