The RAM slots on the majority of motherboards are color-coded to show which pairs work best together. Dual-channel mode, for instance, can be enabled by placing two identical RAM sticks in slots A1 & B1funny slots of a motherboard with four slots designated A1, A2, B1, & B2. Nevertheless, the system might switch back to single-channel mode if the modules are mismatched or installed improperly, negating the performance advantages. optimizing the capabilities of the system. So, anyone who wants to get the most out of their system must know the differences between single-channel and dual-channel configurations.