IBM PC MMX Pentium HS-4500, Manual, Page: 12 / 51

10
2.4 Quick Listing of Jumpers
JP1 ( 1-8 )
¾
CPU Clock-in Select
JP2
¾
WATCH-DOG Active Select
JP5
¾
RS-232
COM-2 disable setting
JP6
¾
RS-232
COM-4 disable setting
JP7
¾
for DiskOnChip™ address setting
JP8
¾
WATCH-DOG Time-out period selection
JP9
¾
RS-422/485 Receiver Enable Control
JP10
¾
CMOS Data Clear
JP11
¾
RS-422/485 Transceiver Enable Control
JP13, JP14
¾
GPS Protocol Selection
JP15
¾
RS-232 COM-3 disable setting
JP17
¾
Panel Power Selection
S1 ( 1-6 )
¾
CPU’s Core/Bus Clock-Ratio Setting
S1 ( 7-16 )
¾
CPU's Vcore voltage level selection setting