QNAP TS-h 90FU Series User Manual page 44

Connecting SAS Expansion Units
To connect the device to SAS expansion units, a storage expansion card must be installed in the device.
For required accessories details, see
1. Install a storage expansion card on the PCIe slot.
For details, see the following topics:
• Replacing Expansion Cards on the TS-h2490FU
• Installing Expansion Cards on the TS-h1090FU
2. Connect the expansion units to the device using the following topology.
TS-h2490FU
Expansion Unit Installation.
TS-hx90FU User Guide
Installation and Configuration 43