Component TS-251D-2G TS-251D-4G
Storage
Drive bays 2 x 3.5-inch SATA 6 Gbps
Tip
The drive bays are backward compatible with 3.5-inch
SATA 3 Gbps drives.
Drive compatibility 3.5-inch bays:
• 3.5-inch SATA hard disk drives
• 2.5-inch SATA hard disk drives
• 2.5-inch SATA solid-state drives
SSD cache acceleration support 3.5-inch drive bays 1 to 2
Hot-swapping Supported
Network
Gigabit Ethernet ports 1 x GbE RJ45
External I/O Ports & Expansion Slots
PCIe slots 1 x PCIe 2.0 x4
Tip
For the list of compatible expansion cards, go to
https://www.qnap.com/compatibility.
USB ports Front:
1 x USB 3.0 Type-A
Note
This USB port supports One Touch Copy.
Rear:
• 3 x USB 2.0 Type-A
• 1 x USB 3.0 Type-A
HDMI ports 1 x HDMI 2.0 (up to 3840 x 2160 resolution at 60Hz)
Interface
IR sensor 1
Note
The QNAP RM-IR004 remote control is an optional
separate purchase.
Buttons • Power
• Reset
• USB One Touch Copy
Dimensions
Form factor Tower
Dimensions (H x W x D) 168 x 105 x 226 mm
(6.61 x 4.13 x 8.90 in)
TS-251D User Guide
Product Overview 5
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