kuug88 hello. HWiNFO show is showing the memory is in single channel mode because there's only one memory stick installed in the motherboard.
Dual channel memory mode requires two matching memory sticks that are identical.
The memory timing of CL 20 is slow for 3200MHz DDR4 memory. A faster CL timing of 16 is better if you decide to shop for a dual channel 3200MHz memory kit. It will come with two identical memory sticks.
Take a look at the motherboard and see who the manufacturer is (Asus, MSI, Gigabyte) and what the model number is. We can look up which memory sticks are compatible with the motherboard by looking up the QVL memory list for the motherboard.
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