Qsan Technology XN5012RE Owner's Manual page 25

CAUTION:
To ensure the system stability, you MUST install genuine QSAN memory
modules for system memory size expansion.
TIP:
In order to achieve dual-channel RAM performance, it is suggested that you
install memory modules with the same capacity in pairs.
Pair 1: Slot #1 and Slot #3
Pair 2: Slot #2 and Slot #4
Memory module support:
1 RAM: Supports one module inserted into any slot as single-channel
memory configuration.
2 RAMs: Supports two modules inserted into slot #1 and slot #3 or slot #2
and slot #4 as one pair of dual-channel memory configuration.
4 RAMs: Supports four modules inserted into all the slots as two pairs of
dual-channel memory configuration.
INFORMATION:
(1) If you want to purchase the optional memory, please contact your
nearest local reseller or visit QSAN official website:
https://qsan.com/location
(2) See the recommended memory module from the QSAN official
website: https://www.qsan.com/en/download.php
23