Delta M815-MX Series Manual page 17

J1,8: CPU, Chassis FAN Connector
This connector support cooling fan of 500mA (6W) or less. Orientate the fan so that
the heatsink fins allow airflow to go across the onboard heatsink. When the system
goes into sleep state, the fan should be shut down to eliminate audible noise and
reduce power consumption. You can monitor the fan speed and the fan must come
with a tachometer output. The CPU and/or motherboard will overheat if there is no
airflow across the CPU and onboard heatsink. Damage may occur to the motherboard
and/or the CPU fan if these pins are incorrectly used.
To Install the SDRAM Memory Module
This motherboard uses a 64-bit data path from memory to CPU and can
accommodate up to 512MB of SDRAM. The 168-Pin DIMMs (Dual In-line Memory
Modules) must be of the 3.3V, unbuffered variety. The position of the notch in the
SDRAM key position will tell you whether or not a SDRAM is unbuffered (see the
figure below), also to prevent the wrong type from being inserted into the DIMM
socket on the motherboard. You must tell your retailer the correct SDRAM type
before purchasing.
RFU
The SDRAM memory module is an extremely sensitive electronic
component. Make sure to touch a metal object to discharge static elec-
tricity from your body before working with the SDRAM. Do not touch
2. Hardware Installation
Pin
1
2
3
1
3
Unbuffered
5.0V
Buffered
3.3V
Assignment
GND
+12V
Speed/RPM
Reserved
M815-MX Series User's Manual
17