Dual channel mode for DDR, DDR2, DDR3, DDR4 and DDR5
In practice, there are some limits to how much RAM your motherboard can handle ... Trying to force a DDR2 in a DDR3 socket will break either the RAM stick or the motherboard.
Ram stick not working after taking it out | TechPowerUp Forums
When I place both RAM sticks (2x 2GB DDR2 Corsair) in the two available slots of the motherboard ... I attempted putting the working RAM into the other slot but did not get success.
XPS 8940, two ram slots not working | DELL Technologies
When I place both RAM sticks (2x 2GB DDR2 Corsair) in the two available slots of the motherboard. Once I boot it up, the computer won't boot.