Type Description Required Accessories
SAS • Uses a SAS 12 Gbps interface
• Supports a maximum of eight
expansion units
• Supports SAS 12 Gbps and 6 Gpbs
drives
• SAS-12G2E storage expansion card
• mini-SAS SFF-8644 cable
• RAIL-A03-57 rail kit
USB • Uses a USB 3.0 Type-A interface
• Supports a maximum of two
expansion units
• Supports SATA 6 Gbps drives
RAIL-B01 rail kit
Connecting SAS Expansion Units
The TS-x73U supports a maximum of eight SAS expansion units and is compatible with the following
models:
• REXP-1220U-RP
• REXP-1620U-RP
To use SAS expansion units, you must install an SAS-12G2E storage expansion card on the NAS and then
connect the expansion units using mini-SAS SFF-8644 cables. You can purchase storage expansion
accessories from QNAP or an authorized reseller.
For details, go to https://shop.qnap.com/.
1. Install a storage expansion card on the PCIe slot.
For details, see Installing Expansion Cards
TS-x73U User Guide
Installation and Configuration 33