Patent ID: 7640386

Claim:
A method for selecting a memory module operating mode, the method comprising: receiving an operating mode selection at a memory module, the memory module including a first hub device in communication with: a memory controller via a first port of the first hub device, a first set of memory devices via a second port of the first hub device and a second hub device via a third port of the first hub device, wherein the first hub device is operable simultaneously with and independently of the second hub device; automatically cascade connecting the third port of the first hub device and a first port of the second hub device in response to the operating mode selection indicating a cascade interconnect mode; and automatically connecting a second port of the second hub device to the memory controller in response to the operating mode selection indicating a dual ported module mode, wherein a third port of the second hub device is in communication with a second set of memory devices, thereby allowing the memory module to be configured to operate as a single memory module and as two distinct memory modules.