System Board Jumper Settings; Clear Cmos/Flash Boot Block Recovery; Processor Speed Settings; System Board Memory - IBM NETVISTA 2251 Hardware Maintenance Manual

System board jumper settings

The following table contains the jumper setting information. (D) indicates the
default setting.

Clear CMOS/Flash Boot Block Recovery

Use the recovery jumper setting to Clear CMOS or to Flash Boot Block Recover.

Processor Speed Settings

Processor speed for type 2251/6830/6831 computers are fixed and are determined
by the processor. There are no settings required.

System board memory

The following matrix cross-references the name of the computer (printed on the
logo) and the size, speed, and type of memory modules supported in the
computer.

Installing memory

When installing DIMMs, the following rules apply:
v Fill each system memory connector sequentially, starting at DIMM 0.
v Use 3.3 V, 133 MHz, unbuffered, SDRAM non-parity DIMMs.
v Use only 64, 128 or 256 MB DIMMs in any combination.
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Hardware Maintenance Manual
Jumper
CMOS Reset
Note: The A40/A40P/A40i CMOS clear/recovery jumper pins are numbered as follows:
v Pin 1 is the farthest from the battery.
v Pins 2 and 3 are below pin 1, as seen in the System Board layout.
Setting
2-3
1-2 (D)
Description
CMOS Reset/Flash Recovery
Mode
Normal Mode