Apparatus for providing both supports including synchronous dynamic random access memory (SDRAM) module and double data rate (DDR) DRAM module

An apparatus that supports memory modules with terminators and memory modules without terminators, comprising:

• a first memory module slot, to connect a first memory module, said first memory module slot requiring a terminator for operation;
• a second memory module slot, to connect a second memory module;
• a synthesizer, connected to said first and second memory module slots, wherein when said first memory module is inserted into said first memory module slot, said synthesizer provides an equivalent terminator, and when said second memory module slot is inserted into said second memory module slot, said synthesizer providing no equivalent terminator;
• and
• a control chip set, coupled to said first memory module slot and said synthesizer, wherein when said first memory module is inserted into said first memory module slot, said control chip set operates at a first memory module operation mode.