Asus M5A99X EVO R2.0 User Manual page 34

Side(s): SS - Single-sided DS - Double-sided DIMM support:
(1) Supports one (1) module inserted into any slot as Single-channel memory
(2) Supports two (2) modules inserted into either the blue slots or the black slots as one
(4) Supports four (4) modules inserted into both the blue and black slots as two pairs of
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1-20
configuration. We suggest that you install the module into A2 slot.
pair of Dual-channel memory configuration. We suggest that you install the modules
into slots A2 and B2 for better compatibility.
Dual-channel memory configuration.
When overclocking, some AMD CPU models may not support DDR3 1600 or higher
frequency DIMMS.
Visit the ASUS website for the latest QVL.
Chapter 1: Product introduction