Semiconductor memory device

A semiconductor memory device comprising:

• a case;
• said case having at least first, second, third and fourth mounting means;
• both of said first and second mounting means being accessible from at least one of a front and a back of said semiconductor memory device;
• both of said third and forth mounting means being accessible from a left side and a right side of said semiconductor device;
• said at least first mounting means includes a plurality of first mounting portions having a first inter-portion spacing in said case;
• said at least second mounting means includes a plurality of second mounting portions having a second inter-portion spacing in said case;
• said at least third mounting means includes a plurality of third mounting portions having a third inter-portion spacing in said case;
• said at least fourth mounting means includes a plurality of fourth mounting portions having a fourth inter-portion spacing in said case;
• an electronic device being capable of using a hard disk device for memory storage;
• said hard disk device being removably mounted to a plurality of fifth mounting portions of said electronic device;
• and
• at least one of said at least first, second, third and fourth mounting means being alignable with said plurality of fifth mounting portions, whereby said semiconductor memory device is mounted to said electronic device in place of said hard disk device.

A method of replacing a variety of hard disk devices in different electronic devices with a single semiconductor memory device comprising:

• said electronic devices having a plurality of hard disk device mounting means including first attachment means that mount said hard disk device to said electronic equipment;
• removing said first attachment means;
• removing said hard disk device from said electronic device;
• said semiconductor memory device having at least two sets of pluralities of mounting means;
• orienting said semiconductor memory device such that at least one of said at least two sets aligns with corresponding hard disk device mounting means in said electronic device;
• and
• fixing said semiconductor memory device to said electronic device with at least one of said first attachment means and a second attachment means engaging said hard disk device mounting means and said at least one of said at least two sets, whereby said semiconductor memory device is mounted to said electronic equipment.