The TS-451A provides the innovative USB 3.0 QuickAccess port that allows you to quickly complete the first-time NAS installation and to then directly access files and data stored on the NAS. It also supports two additional transmission modes: Ethernet NAS mode and iSCSI SAN block-based mode. Combining USB QuickAccess, NAS and iSCSI-SAN into one box, the TS-451A is a powerful but easy-to-use storage solution ideal for backup, synchronization, remote access, and entertainment. It greatly helps to boost productivity and can meet the demands of photographers and audiovisual enthusiasts for direct, quick access to files. The TS-451A is powered by an upgradable and high-performance 14nm Intel?? Celeron?? N3060 dual-core 1.6GHz processor, and supports 4K video playback and transcoding.
???  Excellent system performance, ideal for centralized management, file sharing and backup
???  USB QuickAccess port for accessing files without needing a network connection
???  Supports 4K hardware decoding and transcodes 4K H.264 videos on-the-fly or offline
???  Enjoy the best audio-visual experience with HDMI output, multi-channel surround sound and the free remote control
???  Build a personal karaoke system with OceanKTV
???  Linux Station supports Ubuntu?? with direct output via HDMI
???  A hybrid approach to virtualization: Virtualization Station & Container Station
???  Supports Virtual JBOD (VJBOD) to maximize the storage utilization of multiple QNAP NAS units
Processor
14nm Intel Celeron N3060 dual-core 1.6GHz (up to 2.48GHz)
Hardware Encryption Accleration
AES-NI
System Memory
4GB DDR3L (2 x 2GB)
Maximum Memory
8GB
Memory Slot
2 x SODIMM DDR3L (For dual-DIMM configurations, you must use a pair of identical DDR3L modules.)
Flash Memory
4GB, pre-loaded with QTS system
Drive Type
4 x 3.5"/2.5" SATA 6Gb/s HDDs/SSDs
GbE LAN
2 x Gigabit RJ45 LAN port
USB Port
3 x USB 3.0 ports (Front: 1, Rear:2)
SD Card Reader
Yes
USB QuickAccess
(USB 3.0 Micro-B), USB cable is not included
HDMI
1, max. resolution 3840 x 2160 at 30Hz
Audio Input
3.5mm Microphone Input jack (for dynamic microphone)
Audio Output
3.5mm Line Out jack (for ampliers or speakers)
LED Indicator
Status/Power, USB, HDD 1, HDD 2, HDD 3, HDD 4
Button
Power/Status, USB one-touch-backup, reset
IR Receiver
Yes, supports QNAP RM-IR002 and MCE-compliant remote controls
Others
Kensington security slot, system maintenance port
Operating Temperature
0-40oC
Relative Humidity
5-95% RH non-condensing, wet bulb: 27oC