To improve the convenience of using a memory module, there are provided indicator elements corresponding to types of access to semiconductor memory. The indicator elements are configured to correspond to the access type and indicate the frequency of this type of access to the semiconductor memory. The indicator elements are also configured to indicate the frequency of access to the semiconductor memory and hold an indication corresponding to the maximum frequency of the access. Furthermore, the indicator elements are configured to indicate the frequency of access to the semiconductor memory when a connection terminal 22 is connected to a motherboard connector 91 and a memory module connection terminal 82 is connected to a connector 23.