IBM CORPORATION
PC SERVER 325 (TYPE 8639) MODEL PBO, PTO, PTW, RBO
Processor | Pentium II/Pentium Pro |
Processor Speed | 233/266MHz |
Chip Set | Unidentified |
Video Chip Set | Unidentified |
Maximum Onboard Memory | 512MB (EDO supported) |
Maximum Video Memory | 1MB |
Cache | 256KB |
BIOS | Unidentified |
Dimensions | 305mm x 244mm |
I/O Options | 32-bit PCI slots (6), Ethernet 10BaseT connector, floppy drive interface, Wide SCSI interfaces (2), parallel port, PS/2 mouse port, serial port, USB connectors (2) |
NPU Options | None |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Chassis fan power | C1 | Ethernet 10Base T connector | CN4 |
Auxiliary power | C2 | Parallel port | CN5 |
Hard drive fan power | C3 | Wide SCSI interface (external) | CN6 |
System fan power | C4 | Serial port | CN7 |
Operator panel connector | C5 | Wide SCSI interface (internal) | CN8 |
Chassis fan power | C6 | Floppy drive interface | CN9 |
Speaker | C7 | 32-bit PCI slots | PC1 - PC6 |
Keylock | C8 | CPU slot | SL1 |
PS/2 mouse port | CN1 | System Management slot | SL2 |
USB connector | CN2 | RAID slot | SL3 |
USB connector | CN3 |
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USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Factory configured - do not alter (video enable/disable) | J25 | Unidentified |
| Flash write disabled | J23C | Pins 1 & 2 closed |
| Flash write enabled | J23C | Pins 2 & 3 closed |
| BIOS normal operation | J23D | Pins 1 & 2 closed |
| BIOS recovery mode | J23D | Pins 2 & 3 closed |
| Boot block disabled | J23E | Pins 1 & 2 closed |
| Boot block enabled | J23E | Pins 2 & 3 closed |
| VPD write disabled | J23F | Pins 1 & 2 closed |
| VPD write enabled | J23F | Pins 2 & 3 closed |
» | CMOS memory normal operation | J23G | Pins 1 & 2 closed |
| CMOS memory clear | J23G | Pins 2 & 3 closed |
» | Factory configured - do not alter | J23H | Open |
VIDEO MEMORY CONFIGURATION | |
Size | Bank 0 |
1MB | (2) 256K x 16 |
CPU TYPE SELECTION | ||
Type | J28A | J28B |
Pentium II | Pins 2 & 3 closed | Pins 2 & 3 closed |
Pentium Pro | Pins 1 & 2 closed | Pins 1 & 2 closed |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
VRM connector | VRM1 | VRM connector | VRM2 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Factory configured - do not alter | J8 | Unidentified |
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) 8M x 64 | None | None | None |
64MB | (1) 4M x 64 | (1) 4M x 64 | None | None |
64MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 |
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 |
160MB | (1) 16M x 64 | (1) 4M x 64 | None | None |
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 |
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 |
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 memory. | ||||
CACHE CONFIGURATION |
Note: 256KB cache is located on the Pentium II CPU. |
CPU SPEED SELECTION | ||||||
Speed | J9 | J10 | J12 | J17 | J18 | J20 |
233MHz | 2 & 3 | Open | 2 & 3 | Open | Closed | Closed |
266MHz | 2 & 3 | Open | 2 & 3 | Open | Closed | Closed |
Note: Pins designated should be in the closed position. | ||||||
CPU SPEED SELECTION (CON’T) | |||||
Speed | J27 | J28 | J29 | J30 | J38 |
233MHz | Closed | Open | Open | Closed | Open |
266MHz | Closed | Closed | Closed | Open | Open |
Note: Pins designated should be in the closed position. | |||||
MISCELLANEOUS TECHINCAL NOTE |
A diagram & jumper settings for the Pentium Pro CPU card is unidentified. |