• High-performance Quad-core NAS for Reliable Home and Personal Cloud Storage
• 1 x Ethernet Cable
• Adapter
• Power Cord
• 2 x Drive Tray Keys
• Flat head screw (for 3.5"" HDD)
• Flat head screw (for 2.5"" HDD)
• Quick Installation Guide (QIG)

• JetStream 28-Port Gigabit L2 Managed Switch with 24-Port PoE+
• Power Cord
• Quick Installation Guide
• Rackmount Kit
• Rubber Feet

• TS-251D-2G SAN/NAS Storage System
• 1 x Ethernet Cable
• AC Adapter
• Power Cord
• 8 x Flat Head Screws (for 3.5"" HDD)
• 6 x Flat Head Screws (for 2.5"" HDD)
• Quick Installation Guide (QIG)

Convenient Gigabit Switch with 24-Port PoE+ for a Complete Omada Network

JetStream 28-Port Gigabit L2 Managed Switch with 24-Port PoE+

TL-SG3428MP

PoE+ Output

24× Gigabit PoE+ Ports with Total 384 W Power Budget

Centralized Cloud Management

SDN Solutions Integration for a Highly Efficient Network

Robust Security Strategies

LAN Area Investment Protection

Advanced L2+ Features

Static Routing, IGMP Snooping 802.1 Q VLAN and More

Dedicated 24 PoE+ Ports (384 W Budget) for Numerous Applications

Features 24× 802.3af/at compliant PoE+ ports, the switch supports up to 384 W total PoE power budget. Designed to use a single Ethernet cable for both data and power transmission, it offers flexible deployment for PoE-supported devices such as wireless access points, IP cameras, and IP phones, lowering infrastructure costs for small businesses.

Software Defined Networking (SDN) with Cloud Access

Omada's Software-Defined Networking (SDN) platform integrates network devices, including access points, switches, and gateways, providing 100% centralized cloud management. Omada creates a highly scalable network- all controlled from a single interface. Seamless wireless and wired connections are provided, ideal for use in hospitality, education, retail, offices, and more.

Secure Networking

Security features include IP-MAC-Port-VID Binding, Port Security, Storm Control, and DHCP Snooping to defend against a range of network threats. An integrated list of common DoS attacks is available, making it easier than ever to prevent them. In addition, the Access Control Lists (ACL, L2 to L4) feature restricts access to sensitive network resources by denying packets based on source and destination MAC address, IP address, TCP/UDP ports, or VLAN ID. Users' network access can be controlled via 802.1X authentication, which works with a RADIUS/Tacacs+ server to grant access only when valid user credentials are provided.

Advanced QoS

Voice and video traffic can be prioritized based on IP address, MAC address, TCP port number, UDP port number, and more. With QoS (Quality of Service), voice and video services remain smooth, even when bandwidth is in short supply.

Abundant L2 and L2+ Features

A complete lineup of L2 features are supported including 802.1Q VLAN, Port Mirroring, STP/RSTP/MSTP, Link Aggregation Control Protocol, and 802.3x Flow Control. Advanced IGMP Snooping ensures the switch intelligently forwards multicast streams to only the appropriate subscribers, cutting out unnecessary traffic, while IGMP throttling & filtering restrict each subscriber on a port level to prevent unauthorized multicast access. Static Routing is a simple way of segmenting the network and internally routs traffic through the switch for improved efficiency.

ISP Features

sFlow, QinQ, L2PT PPPoE ID Insertion, and IGMP authentication features are provided, developed with service providers in mind. 802.3ah OAM and Device Link Detection Protocol (DLDP) offer easy monitoring and troubleshooting of Ethernet links.

IPv6 Support

IPv6 functions such as Dual IPv4/IPv6 Stack, MLD Snooping, IPv6 ACL, DHCPv6 Snooping, IPv6 Interface, Path Maximum Transmission Unit (PMTU) Discovery and IPv6 Neighbor Discover guarantee your network is ready for the Next Generation Network (NGN) without upgrading your hardware.

Powered by quad-core 1.7 GHz processor, the TS-431K provides 4 drive bays storage space to securely store your important files and data, while allowing you to easily share files with family and friends. Featuring a compact pure white minimalist design, the TS-431K can easily integrate with any home décor and takes up very little space. The TS-431K comes with lockable drive trays, ensuring the drives will not be accidentally removed or fall out and cause data loss. The TS-431K provides comprehensive local, off-site and cloud backup and secure Snapshot technology to help create a reliable backup and disaster recovery plan. In the event of a system crash or accidental file deletion, you can quickly restore the system to its normal state.

• File Station enables centralized file management on the NAS, connected devices, and connected clouds, making data management more easily, while saving time.

• HBS (Hybrid Backup Sync) can backup and sync your data to other NAS, servers and cloud storage for comprehensive backup and disaster recovery.

• Snapshots fully record system status and data, allowing you to protect files and data from accidental deletion and malware attacks.

• Rich multimedia applications and a wide range of streaming methods, bringing greater multimedia enjoyment.

• Connect to external USB devices such as card readers, printers or uninterruptable power supply through the USB 3.2 Gen 1 port for greater application potential.

• myQNAPcloud service allows you to easily access, manage, and share NAS files via the Internet.

Quad-core CPU drives higher performance

The TS-431K is powered by a quad-core 1.7 GHz CPU that features more CPU cores to enhance system performance. With 1 GB RAM, two Gigabit LAN ports, and SATA 6 Gb/s drives, the TS-431K delivers high performance, while also maintaining data security. The TS-431K also features three USB 3.2 Gen 1 ports, allowing you to transfer large media files between the NAS and your devices. The USB port on the front panel supports one touch copy, making it convenient for you to backup data on your external device to a NAS or vice versa with just one click.

Easily Create a High-speed Network Environment

You can use QNAP USB 3.2 Gen 1 on 5GbE adapters (QNA-UC5G1T) with the TS-431K or your computer. By connecting the NAS and PC through the 5GbE adapters, you can create a 5GbE network connectivity for nearly 300 MB/s transfer speed.

Boost productivity with QNAP applications

QNAP File Station provides centralized file management, allowing you to view and manage files on your TS-431K and other storage sources or external devices, which allows you to easily share files with family and friends through email, social media, or share link. You can also use Qfile mobile app to access NAS files from a mobile device.

File Station

File Station allows you manage files stored on your QNAP NAS in your cloud space, or from USB card reader and mobile devices. You can easily access all your data from a single application.

Qfile

Qfile mobile app allows you to access NAS files from a mobile device anytime anywhere, while uploading and backing up files on your phone to a NAS.

Protects your sensitive data with file encryption

When sharing sensitive or confidential files on your TS-431K, you can enhance data security with File Station by encrypting files into .qenc files and set a password. The file recipients need to download and install QENC Decrypter on their computers and enter the correct password to decrypt, view, and use encrypted .qenc files.

The TS-251D integrates secure data storage and multimedia entertainment into one device. Featuring a PCIe slot, the TS-251D allows you to flexibly extend NAS functionality and potential applications. You can enhance overall system performance by installing a QNAP QM2 card for M.2 SSD caching/10GbE connectivity combined with Qtier auto-tiering storage and installing a 10GbE/5GbE/2.5GbE network expansion card. In addition, TS-251D can be used with QNAP's smart AI photo management application, QuMagie, which integrates AI image recognition to group similar photos together in album ""People"", ""Things"" and ""Places"". The TS-251D features an HDMI slot to stream multimedia throughout your home. The TS-251D supports dual-channel hardware decoding and transcoding, allowing you to view NAS media files smoothly across various devices.

The PCIe port supports the installation of a 10GbE/5GbE/2.5GbE/ network expansion card, a QM2 card, a USB 3.1 Gen 2 (10Gbps) card, or a wireless network card.

Provide 4K media playback and online transcoding, while enabling cross-device multimedia viewing via HDMI output or streaming applications.

Snapshots fully record the system status and data. If files are accidentally deleted or modified, you can quickly restore previously-recorded data.

QNAP provides a wide range of multimedia applications. You can manage all apps through the Multimedia Console to simplify management.

HBS backs up and synchronizes NAS data to other remote servers or cloud storage, while QuDedup deduplicates data at the source to reduce network bandwidth and storage space.

Use VJBOD (Virtual JBOD) to expand your storage capacity by using the unused storage of other QNAP NAS. Connect up to two TR series USB storage enclosure.

Intel® Celeron® J4005 Dual-Core Processor and AES-NI Hardware Encryption

Powered by Intel® Celeron® J4005 dual-core 2.0 GHz processor (burst up to 2.7 GHz), DDR4 RAM (up to 8 GB), one Gigabit LAN port, and supports SATA 6Gb/s hard drives, the TS-251D combines network expansion cards to create dependable read/write performance. The TS-251D features Intel® AES-NI 256 hardware-accelerated encryption for both full NAS volumes and shared folders, boosting system performance while securing sensitive data stored in the TS-251D.

Smart AI Photo Management

QuMagie integrates QuMagie Core AI image recognition technology for facial recognition, subject identification, and geotagging photos. Similar photos are categorized into People, Places, and Things albums. Moreover, QuMagie features a built-in timeline scroll, customizable folder covers, iOS® Live Photo display and a powerful search tool, to provide you with the ultimate photo management and image sharing solution.

Real-Time 4K Video Transcoding

Featuring advanced Intel® UHD Graphics, the TS-251D supports dual-channel 4K hardware decoding and real-time transcoding, allowing you to convert videos to universal file formats that can be smoothly played across various devices. You can also watch high-quality 4K media files on an HDTV using the HDMI output or with Plex® Media Server to stream media files to mobile devices and media streaming devices (including DLNA®, Roku®, Apple TV®, Amazon Fire TV® and Chromecast™). The QNAP RM-IR004 remote control (sold separately) can be configured using QButton to customize individual button actions, providing a more user-friendly NAS experience.

Multiple Ways To Enjoy Your Multimedia

QNAP provides a wide range of multimedia applications for you to easily enjoy photos, music, and videos.

• Rack-mountable
• Desktop

• iSCSI
• TCP/IP
• HTTPS
• SMTP
• LDAP
• L2TP
• CIFS
• SFTP
• DHCP
• SMB
• SSH
• SMSC
• IPSec
• FTPS
• AFP
• BitTorrent
• DNS
• RTSP
• FTP
• IPv4
• WEBDAV
• Telnet
• DLNA
• SSL
• SNMP
• TLS
• HTTP
• NFS
• TFTP
• FXP
• UPnP
• RSync
• DDNS
• IPv6
• PPTP

• iSCSI
• TCP/IP
• IPv4
• IPv6
• DHCP
• NAT
• HTTP
• HTTPS
• TLS
• WEBDAV
• SSH
• Telnet
• FTP
• CIFS/SMB
• AFP
• SSL
• SMSC
• LDAP
• DDNS
• FXP
• SSL/TLS
• MTP
• RSync
• PPTP
• L2TP
• IPSec
• DLNA
• UPnP
• BitTorrent