Because before buying a memory bank didn't pay attention to see, think oneself is 1 of article 16, (it was 8 + 8)
Bought 1 the new 16 g,
(all three frequency)

Now is 16 + 8 + 8,

Motherboard memory slots is 4, A1, A2, B1, B2, write preferred using slot 2 (manual)

16 g in A2
8 + 8 B1, B2

Can light up the computer, CPU - z shows dual channel, total size is 32

But I didn't write is dual channel 16 + 16 or 8 + 8

Please advice?