Acer 900 User Manual page 6

Table 1-1 Jumper Settings (continued)
Jumper
SCSI Termination
JP24 1-2*
2-3
Core/Bus Freq. JP4
2-3
JP4, JP5, JP7
1-2
2-3
2-3
1-2
1-2
2-3
2-3
1-6
Setting
High-byte terminator ON
High-byte terminator OFF
JP5 JP7 Bus Freq.
50 MHz
2-3 1-2
60 MHz
1-2 2-3
60 MHz
1-2 2-3
60 MHz
2-3 2-3
66 MHz
2-3 3-4
66 MHz
1-2 3-4
66 MHz
1-2 3-4
66 MHz
2-3 3-4
Function
Core Freq. Ratio
75 MHz 3/2
150 MHz 5/2
120 MHz 2/1
90 MHz 3/2
200 MHz 3/1
166 MHz 5/2
133 MHz 2/1
100 MHz 3/2
User's Guide