Yes a memory stick is in the category of consumer electronics. There are memory sticks for cameras,phones,computers (usb memory, flash memory) and other devices;all of which can be categorised as consumer electronics.
The original Sony Memory Stick has a maximum capacity of 128MB. Memory Stick PRO - 4GB actual, 32GB theoretical, PRO DUO - 32GB actual, higher theoretical, Memory Stick Micro - 16GB actual, 32GB...