Patent ID: 7016212

Claim:
A memory module for insertion in any one of connectors formed on a motherboard, the module comprising: a memory chip; a pin configured and positioned to engage with the connector; a bus which connects said memory chip to said pin; a terminating resistor connected to one end of said bus, and a stab resistor connected between said pin and the other end of said bus; said connectors being connected to a memory controller in a stab connection style, said stab resistor and said terminating resistor having stab resistance Rs and terminating resistance Rterm, respectively, wherein said stab resistance Rs and said terminating resistance Rterm are given by: Rs =( N −1)× Z effdimm/ N, and Rterm =Zeffdimm where N represents the number of said connectors; and Zeffdimm represents the effective impedance of a memory chip arrangement portion consisting of said bus and said memory chip.