PT-2011 Pentium MMX 233 Jumper Settings: Clock generator (CLK) jumper settings depends on the clock generator: ICW W48C67-01 CLK1 1-2 CKL2 1-2 CKL3 1-2 ICS 9147-01 CLK1 1-2 CKL2 2-3 CKL3 2-3 CPU clock rate (FREQ) FREQ1 1-2 FREQ2 1-2 FREQ3 1-2