IBM CORPORATION PC300 (TYPE 6588) Device Type Mainboard Processor Pentium II Processor Speed 233/266/300MHz Chip Set Unidentified Video Chip Set Unidentified Maximum Onboard Memory 512MB (EDO supported) Maximum Video Memory Unidentified Cache 256/512KB (located on Pentium II CPU) BIOS Unidentified Dimensions 330mm x 218mm I/O Options Ethernet 10BaseT connector, floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial port, VGA feature connector, VGA port, riser slot, IR connector, USB connectors (2), line in, line out, wavetable connector, audio in – CD-ROM NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location 5v auxiliary power C1 Ethernet 10BaseT CN2 connector Telejack connector C2 USB connector 2 CN3 Audio in - CD-ROM C3 USB connector 1 CN4 Wavetable connector C4 Parallel port CN5 5v power C5 PS/2 mouse port CN6 3.3v auxiliary power C6 Line out CN7 Power switch C7 Line in CN8 connector Power LED/IDE C8 VGA feature connector CN9 interface LED CPU fan power C9 Floppy drive CN10 interface Chassis fan power C10 IDE interface 2 CN11 SCSI interface LED C11 IDE interface 1 CN12 Wake on LAN connector C12 IR connector J3M1 Wake on modem C13 Serial port J4M1 connector Chassis security C14 Riser slot SL1 connector VGA port CN1 USER CONFIGURABLE SETTINGS Function Label Position » Flash BIOS normal operation J1 Pins 5 & 6 closed Flash BIOS recovery mode J1 Pins 4 & 5 closed Floppy drive normal operation J2 Pins 5 & 6 closed Floppy drive read only J2 Pins 4 & 5 closed » Factory configured - do not alter J4 Pins 2 & 3 closed » CMOS memory normal operation J4 Pins 5 & 6 closed CMOS memory clear J4 Pins 4 & 5 closed Password normal operation J5 Pins 2 & 3 closed Password clear J5 Pins 1 & 2 closed Setup access normal operation J5 Pins 5 & 6 closed Setup access disabled J5 Pins 4 & 5 closed DIMM CONFIGURATION Size Bank 0 Bank 1 Bank 2 8MB (1) 1M x 64 None None 16MB (1) 2M x 64 None None 16MB (1) 1M x 64 (1) 1M x 64 None 24MB (1) 2M x 64 (1) 1M x 64 None 24MB (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 32MB (1) 4M x 64 None None 32MB (1) 2M x 64 (1) 1M x 64 (1) 1M x 64 32MB (1) 2M x 64 (1) 2M x 64 None 32MB (1) 1M x 64 (1) 1M x 64 (1) 1M x 64 DIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 40MB (1) 4M x 64 (1) 1M x 64 None 40MB (1) 2M x 64 (1) 2M x 64 (1) 1M x 64 48MB (1) 4M x 64 (1) 1M x 64 (1) 1M x 64 48MB (1) 4M x 64 (1) 2M x 64 None 48MB (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 56MB (1) 4M x 64 (1) 2M x 64 (1) 1M x 64 64MB (1) 8M x 64 None None 64MB (1) 4M x 64 (1) 4M x 64 None 64MB (1) 2M x 64 (1) 2M x 64 (1) 2M x 64 72MB (1) 8M x 64 (1) 1M x 64 None 72MB (1) 4M x 64 (1) 4M x 64 (1) 1M x 64 80MB (1) 8M x 64 (1) 1M x 64 (1) 1M x 64 80MB (1) 4M x 64 (1) 4M x 64 (1) 2M x 64 88MB (1) 8M x 64 (1) 2M x 64 (1) 1M x 64 96MB (1) 8M x 64 (1) 2M x 64 (1) 2M x 64 96MB (1) 4M x 64 (1) 4M x 64 (1) 4M x 64 104MB (1) 8M x 64 (1) 4M x 64 (1) 1M x 64 112MB (1) 8M x 64 (1) 4M x 64 (1) 2M x 64 128MB (1) 16M x 64 None None 128MB (1) 8M x 64 (1) 4M x 64 (1) 4M x 64 128MB (1) 8M x 64 (1) 8M x 64 None 144MB (1) 16M x 64 (1) 1M x 64 (1) 1M x 64 144MB (1) 16M x 64 (1) 2M x 64 None 144MB (1) 8M x 64 (1) 8M x 64 (1) 2M x 64 152MB (1) 16M x 64 (1) 2M x 64 (1) 1M x 64 160MB (1) 16M x 64 (1) 2M x 64 (1) 2M x 64 160MB (1) 8M x 64 (1) 8M x 64 (1) 4M x 64 168MB (1) 16M x 64 (1) 4M x 64 (1) 1M x 64 176MB (1) 16M x 64 (1) 4M x 64 (1) 2M x 64 192MB (1) 16M x 64 (1) 4M x 64 (1) 4M x 64 192MB (1) 8M x 64 (1) 8M x 64 (1) 8M x 64 200MB (1) 16M x 64 (1) 8M x 64 (1) 1M x 64 208MB (1) 16M x 64 (1) 8M x 64 (1) 2M x 64 224MB (1) 16M x 64 (1) 8M x 64 (1) 4M x 64 256MB (1) 16M x 64 (1) 8M x 64 (1) 8M x 64 384MB (1) 16M x 64 (1) 16M x 64 (1) 16M x 64 512MB (1) 32M x 64 (1) 32M x 64 None Note: Board accepts EDO memory. CACHE CONFIGURATION Note: 256KB/512KB cache is located on the Pentium II CPU. VIDEO MEMORY CONFIGURATION Note: The size and location of the video memory is unidentified. CPU SPEED SELECTION CPU speed Clock speed Multiplier J2 J3 233MHz 66MHz 3.5x 2 & 3 2 & 3, 5 & 6 266MHz 66MHz 4x 1 & 2 1 & 2, 4 & 5 300MHz 66MHz 4.5x 1 & 2 2 & 3, 4 & 5 Note: Pins designated should be in the closed position.