QNAP TS-439U vs TS-409U, TS-419U
  TS-439U-RP TS-419U-RP
Model Name TS-439U-SP/RP TS-419U TS-409U
CPU Intel ATOM 1.6GHz Marvell 1.2GHz Marvell 5281 500MHz
Flash 128MB (DOM) 16MB 8MB
RAM 1GB DDRII 512MB DDRII 512MB DDRII
Ethernet GigaLAN x2 GigaLAN x2 GigaLAN x1
USB 2.0 port x3 x4 X3
eSATA port - 2 -
SCSI - - -
VGA Yes - -
UPS Support Yes Yes Yes
Smart Fan Yes Yes Yes
Internal HDD Support 2.5" SATA or 3.5" SATA I/II 2.5" SATA or 3.5" SATA I/II SATA I/II
LED indicator USB, status, LAN, HDD1-4 USB, status, LAN, HDD1-4 USB, Status, LAN, HDD 1-4
LCD display - - -
Power Supply Specification Output:150W
Input: 100-240Vac, 50~60Hz, 2A
Output: 250W
Input: 100-240V AC, 50/60Hz
200W, Input:115-230 Vac~, 47-63 Hz, 3.0A
Online RAID Capacity Expansion Yes Yes Yes
Online RAID Level Migration Yes Yes Yes
RAID 0 Yes Yes Yes
RAID 1 Yes Yes Yes
RAID 5 Yes Yes Yes
RAID 6 Yes Yes Yes
RAID 5+spare Yes Yes Yes
Single Yes Yes Yes
JBOD Yes Yes Yes
Dynamic DNS Yes Yes Yes
NFS (Linux client support) Yes Yes Yes
SMB/CIFS Yes Yes Yes
AFP (for Mac) Yes Yes Yes
Windows AD Service Yes Yes Yes
Web Server Built-in phpMyAdmin/ MySQL and SQLite (dual support) Built-in phpMyAdmin/ MySQL and SQLite (dual support) Built-in phpMyAdmin/ MySQL and SQLite (dual support)
HTTPS/ SSL Secure Login Yes Yes Yes
Web File Manager Yes Yes Yes
Remote Replication Yes Yes Yes
Encrypted Remote Replication (over SSH) Yes Yes Yes
Backup Server with NetBak Replicator Software (Auto-sync, Schedule, and Instant Backup) Yes Yes Yes
USB One-Touch-Copy Yes Yes Yes
FTP Server Yes Yes Yes
FTP Passive Port Range Setup Yes Yes Yes
FTP over SSL/TLS (explicit encryption) Yes Yes Yes
FTP Bandwidth Control Yes Yes Yes
SSH/Telnet Login Yes Yes Yes
Configurable Management Port Yes Yes Yes
IP Filter Yes Yes Yes
Journaling file system Yes Yes Yes
Unicode support Yes Yes Yes
Network Recycle Bin Yes Yes Yes
UPnP/ DLNA Media Server Twonky UPnP/ DLNA with Internet Radio Twonky UPnP/ DLNA with Internet Radio Twonky UPnP/ DLNA with Internet Radio
BitTorrent/ FTP/ HTTP Download Station Yes Yes Yes
QGet Download Remote Control Software Yes Yes Yes
iTunes Music Server Yes Yes Yes
Max User Accounts 4096 4096 1024
Max Groups 512 512 128
Share folder level ACL support Yes Yes Yes
Max Shared Folder 512 512 256
User Quota Setting Yes Yes Yes
Multi-lingual Support 15 15 15
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