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Hardware Installation 
2-16 
III. Buffered and non-buffered: This motherboard supports non-buffered 
DIMMs. You can identify non-buffered DIMMs and buffered DIMMs 
according to the position of the notch, following figure is for your reference: 
 buffered
non-buffered
Reserved
 
Because the positions are different, only non-buffered DIMMs can be inserted 
into the DIMM sockets on this motherboard. Although most of DIMMs on 
current market are non-buffered, we still suggest you to ask your dealer for 
the correct type. 
IV. 2-clock and 4-clock signals: Although both of 2-clock and 4-clock signals 
are supported by this motherboard, we strongly recommend choosing 4-
clock SDRAM in consideration of reliability.  
 
 
Tip: To identify 2-clock and 4-clock SDRAM, you 
may check if there are traces connected to 
golden finger pin 79 and pin 163 of the SDRAM. If 
there are traces, the SDRAM is probably 4-clock; 
Otherwise, it is 2-clock. 
V. Parity: This motherboard supports standard 64 bit wide (without parity) and 
72-bit wide (with parity) DIMM modules. 
 
There is no jumper setting required for the memory size or type. It is 
automatically detected by the system BIOS, and the total memory size is to 
add them together. The maximum is 768MB
LX chipset can only use 3V EDO or SDRAM, so we can mix EDO and SDRAM. 
Every DIMM socket can be EDO or SDRAM. For EDO, maximum is 256MB. 
For SDRAM, maximum is 128MB. 
Total Memory Size = Size of DIMM1 + Size of DIMM2 + Size of DIMM3  
 
Note: 768MB memory is achieved by using double-
sided buffered EDO DIMMs.