A memory controller coupled to a memory device and configured to control access operations of the memory device includes a host interface and a microprocessor. The microprocessor is coupled to the host interface and configured to set a value of a predetermined parameter to a specific value after the memory controller powers up and start to perform a link flow to try to establish a transmission link via the host interface. The predetermined parameter is one of a plurality of capability parameters of the host interface and the predetermined parameter is related to reception of the host interface. After the link flow is completed, the microprocessor is further configured to identify an object device with which the host interface establishes the transmission link according to the specific value and at least one of a plurality of attribute parameters associated with the transmission link.