Component
TS-251B
Drive compatibility
• 3.5-inch SATA hard disk drives
• 2.5-inch SATA hard disk drives
• 2.5-inch SATA solid-state drives
Hot-swappable
Yes
M.2 SSD type
Optional: QNAP QM2 PCIe expansion card
SSD cache acceleration support
Yes
Note
• SSD cache drives are not hot-swappable.
• M.2 SSDs are not hot-swappable.
• SSDs using PCIe expansion slots are not hot-
swappable.
Network
Gigabit Ethernet ports
1 x Gigabit RJ45
External I/O Ports & Expansion Slots
PCIe slots
1 x PCIe 2.0 x2
USB ports
• Front: 1 x USB 3.0 Type-A
Note
You can use the One Touch Copy button with this port.
• Rear: 4 x USB Type-A:
• 3 x USB 2.0 Type-A
• 1 x USB 3.0 Type-A
HDMI outputs
1 x HDMI v1.4b (Supports up to 3840 x 2160 @ 30 Hz)
Audio
• 2 x 3.5 mm dynamic microphone jacks
• 1 x 3.5 mm line-out jack
• 1 x speaker
Note
You cannot use the speaker and the line-out jack
simultaneously.
Interface
Buttons
• Power
• Reset
• USB One Touch Copy
IR sensor
1
Note
The QNAP RM-IR004 remote control is an optional
separate purchase.
TS-251B User Guide
Product Overview
5
