a. Connect the USB cable to the USB 3.0 Type-B port on the expansion unit.
b. Connect the USB cable to a USB 3.0 Type-A port on the NAS.
2. Power on the expansion units.
3. Verify that the expansion units are recognized by the NAS.
a. Log on to QTS as administrator.
b. Go to Main Menu > Storage Manager > Overview > System .
c. Verify that the expansion units are listed.
Replacing Memory Modules
The NAS has four memory slots. You can increase the memory capacity of the NAS by upgrading the
memory modules. When using multiple modules, use only QNAP modules of the same type and capacity to
maintain system performance and stability. You can purchase QNAP memory modules from authorized
resellers.
When replacing modules, ensure the following:
1. A module is installed in slot 1.
2. Modules are are installed in pairs. When installing two modules, use slots 1 and 3.
For details on slot numbering, see System Board.
Warning
• Only qualified personnel should perform the following steps. Failure to follow
instructions can result in serious injury or death.
• Observe electrostatic discharge (ESD) procedures to avoid damage to components.
1. Power off the NAS.
TS-x73U User Guide
Installation and Configuration 35
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