TS-251D | TS-251D Intel Dual-Core Multimedia NAS with a PCIe Slot for Extending NAS Functionality

Name: TS-251D | TS-251D Intel Dual-Core Multimedia NAS with a PCIe Slot for Extending NAS Functionality
Brand: Qnap
SKU: 11987
Availability: InStock
Rating: 4 (1 reviews)

Model: TS-251D
Processor: Intel Celeron J4005/J4025 Dual-Core 2.0 GHz (burst up to 2.7/2.9 GHz)
Memory: 2GB/4GB DDR4 SO-DIMM (expandable to 8GB)
Storage: 2 x 3.5"/2.5" SATA III bays
Network: 1 x Gigabit Ethernet
Dimensions: 168 x 105 x 226 mm
Weight: 1.28 kg (diskless)

Description
Reviews (1)

TS-251D Intel Dual-Core Multimedia NAS with a PCIe Slot for Extending NAS Functionality

Multimedia and Performance

The QNAP TS-251D is a 2-bay NAS powered by an Intel Celeron J4005/J4025 dual-core 2.0 GHz processor (burst up to 2.7/2.9 GHz) with 2GB or 4GB DDR4 RAM (expandable to 8GB). It supports dual-channel 4K hardware decoding and transcoding, delivering read/write speeds up to 982/892 MB/s in RAID 0. With an HDMI 2.0 port and QuMagie AI photo management, it’s ideal for home multimedia streaming and organization.

PCIe Expansion and Connectivity

Featuring a PCIe Gen 2.0 x4 slot, the TS-251D supports QNAP QM2 cards for M.2 SSD caching or 10GbE connectivity, 10GbE/5GbE/2.5GbE network cards, USB 3.2 Gen 2 (10Gbps) cards, or wireless adapters. It includes one Gigabit LAN port, three USB 2.0 ports, two USB 3.2 Gen 1 ports, and supports SATA 6Gb/s drives for flexible storage expansion.

Data Protection and Software

Running QTS 4.4.1 or later, the TS-251D offers Intel AES-NI 256-bit encryption, block-based snapshots (up to 1024 per NAS), and Hybrid Backup Sync with QuDedup for efficient backups to other QNAP NAS, remote servers, or cloud storage. Features like VJBOD, Qtier auto-tiering, and apps such as Plex and File Station enhance data management and security.

QNAP TS-251D: All Features

Processor	Intel Celeron J4005/J4025 Dual-Core 2.0 GHz (burst up to 2.7/2.9 GHz)
Memory	2GB/4GB DDR4 SO-DIMM (expandable to 8GB)
Storage	2 x 3.5"/2.5" SATA III bays, hot-swappable
Network	1 x Gigabit Ethernet (RJ45)
Ports	3 x USB 2.0, 2 x USB 3.2 Gen 1 Type-A, 1 x HDMI 2.0, 1 x PCIe Gen 2.0 x4
RAID Support	RAID 0, 1, JBOD, Single
Software	QTS 4.4.1+, QuMagie, Hybrid Backup Sync, File Station, Plex Media Server
Security	Intel AES-NI 256-bit encryption, snapshots, QuDedup
Compatibility	Windows 7+, macOS 10.10+, Linux, UNIX, iOS, Android

QNAP TS-251D: All Specifications

Model	TS-251D
Processor	Intel Celeron J4005/J4025 Dual-Core 2.0 GHz (burst up to 2.7/2.9 GHz)
Drive Bays	2 x 3.5"/2.5" SATA III, hot-swappable
Max Capacity	36TB (2 x 18TB drives, varies by RAID)
RAID Support	RAID 0, 1, JBOD, Single
File System	Internal: EXT4; External: EXT4, EXT3, FAT32, NTFS, HFS+, exFAT
Ports	3 x USB 2.0, 2 x USB 3.2 Gen 1 Type-A (5 Gbps), 1 x HDMI 2.0 (4K), 1 x PCIe Gen 2.0 x4
Performance	Up to 982 MB/s read, 892 MB/s write (RAID 0, tested with Samsung 850 Pro SSDs)
Encryption	Intel AES-NI 256-bit for NAS volumes and shared folders
Operating System	QTS 4.4.1 or later
Power Supply	External 65W, 100-240V AC, 50/60 Hz
Power Consumption	~26.57W (operation), ~13.07W (HDD hibernation)
Cooling	1 x 70mm fan
Operating Temperature	0°C to 40°C
Non-Operating Temperature	-20°C to 70°C
Noise Level	~16.7 dB(A)
Dimensions (HxWxD)	168 x 105 x 226 mm
Weight	1.28 kg (diskless)
System Compatibility	Windows 7+, macOS 10.10+, Linux, UNIX, iOS, Android
Certifications	FCC, CE, BSMI, VCCI, RCM
Warranty	2-year limited, extendable to 5 years
Package Contents	NAS, AC adapter, power cord, RJ45 cable, HDD screws, quick start guide