PRESARIO 600 FAMILYSystemBoards Assembly Spare Part SystemCnfig Code486SX/25 003431-001003431-002160018-001 Presario 625Presario CDSHGSHGT486SX/33 003434-001003434-002160420-001 Presario 633,Presario CDSHGU, HJDHHY, HJD486SX2/66 003876-001 164912-001 Presario 660 HJE486SX2/50 003858-001 164857-001 Presario 650 HKNJumper Settings (System Board 003431, 003434, 003858, 003876)Jumper Function Pins FunctionP5, P6 On-board Video Select 1,2 * EnabledNo jumpers DisabledP7 Processor Select 1,2 Nonsocketed Enabled2,3 Nonsocketed DisabledNo header SocketedP8 Processor Speed 1,2 33-MHz Processor BusSelect 2,3 25-MHz Processor BusP9 1, 2 Processor Configuration 1,2 486DX/DX2, 486SX(nonsocketed),487SX/OD, 486SX22,3 486SX (socketed)P10 1, 2 Processor Configuration 1,2 486SX (nonsocketed)and 486SX(socketed)2,3 486DX/DX2,487SX/OD, and486SX2P11 2 Processor Configuration 1,2 486DX/DX2,486SX22,3 487SX/OD3,4 486SX (nonsocketed)and 486SX(socketed)P13 ConfigurationResistors of Super I/O Chip1,2 *No jumper26Eh/26Fh398h/399hP14 Clear CMOS 1,2 Remove jumper for 10seconds to clear setup* Default.1 Headers not installed on 486/33 models.2 Headers not installed on 486/50 and 486/66 models. Configuration set by0-ohm resistors.Microprocessors Spare Part System486DX2/50 163661-001 Option486DX2/66 194395-001 OptionMemory Boards Assembly Spare Part System1 MB Memory Module 118666-004 141752-001 Option2 MB Memory Module 118667-004 141753-001 Option4 MB Memory Module 137854-002 141754-001 Option8 MB Memory Module 137853-002 141755-001 Option16 MB Memory Module 137143-003 149947-001 OptionMiscellaneous Internal Assembly Spare Part SystemBackplane (4-slot) 002927 143342-001 All