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How to determine ram type
Prepare your computer to remove a memory stick.
Power down your computer and turn off the power switch located on the back of your computer case, near the power cord socket.
Remove the case door and locate the memory slots on the motherboard.
The slots, which are approximately 4.5 to 5 inches (10 to 12 cm) long, typically will be lined up in a row of 4 to 8. Depending on amount of ram installed on your system and the number of memory slots on your motherboard, some of the slots may be empty.