Up for auction is a QNAP TS-239 Pro II NAS that I have owned since new. It's been awesome and I've never had any issues.

It has been upgraded to the latest firmware 4.2.6 (released June 2017) and has been factory reset.

NAS comes with ALL original packaging including box/manuals/cd/power cable/network cable and mounting screws for 2.5 and 3.5 HDDs

If you have any questions let me know!

Hardware
Processor1.66GHz Intel Atom D410 CPU (Single-Core)
RAM1GB DDR2
Memory512MB Flash Memory (DOM)
Storage2x 2.5" or 3.5" SATA I/II Storage Bay
LAN Port2x RJ-45 10/100/1000 Gigabit Ethernet Ports
LED IndicatorsStatus, LAN, USB, eSATA, Power, HDD 1, HDD 2
Ports5x USB 2.0 Ports (1x Front, 4x Rear)
1x VGA (Maintenance)
2x eSATA Port
ButtonsPower button, USB One-Touch-Backup Button, Reset button
Audible AlarmSystem Warning
Form FactorTower
Dimensions5.9 x 4 x 8.5" (150 x 102 x 216mm)
Weight3.8 lbs (1.7kg)
Environmental RequirementsOperating Temperature: 32-104°F (0-40°C)
Operating Humidity: 0-95% (non-condensing)
Power RequirementsAC 100-240V 50/60Hz
Output: 60W
Consumption (with 2x 1TB HDDs): 25W (16W Sleep-mode; 1W Power-off)
SecurityLockable Hard Drive Bays
K-Lock Security
Fan7cm/12V DC Quiet Cooling Fan
Software
Operating SystemEmbedded System: Linux
Supported OS: Windows 2000/XP/Vista/7 (32- and 64-bit)/Server 2003/Server 2008
Mac OS X
Linux
Unix
NetworkingTCP/IP (IPv4 & IPv6: Dual Stack) 
Dual Gigabit NICs with Jumbo Frame
Multi-IP Setting, Port Trunking/ NIC Teaming
DHCP Client, DHCP Server 
Protocols: CIFS/SMB, AFP (3.1), NFS, FTP, HTTP, HTTPS, Telnet, SSH, iSCSI and SNMP
Network Service Discovery (UPnP, Bonjour)

File Sharing:
CIFS/SMB (Plus DFS Support) 
AFP 
NFS 
FTP 
WebDAV
File & Storage System SupportEXT3 (Internal/External HDD)
EXT4 (Internal/External HDD)
FAT (External HDD)
NTFS (External HDD)
ManagementDisk Management: 
Single Disk, JBOD, RAID 0/1/
Online RAID Capacity Expansion 
Online RAID Level Migration 
HDD S.M.A.R.T. 
Bad Block Scan 
RAID Recovery 
Bitmap Support

Power Management:
Wake on LAN
Scheduled Power On/Off (Max 15 settings) 
Automatic Power On After Power Loss 

Access Right Management:
Max User Accounts: 2,048 
Max Groups: 256 
Max. Share Folders: 256 
Batch Creating Users 
Import User List 
User Quota Management 

Web Administration:
AJAX-based User Interface 
HTTP/HTTPS Connections 
Alert Notification (Email & SMS) 
Smart Fan Control 
DDNS 
SNMP (v2 & v3) 
UPS Support with SNMP Management (USB) 
Resource Monitor 
Network Recycle Bin for CIFS/SMB and AFP 
Comprehensive Logs (Events & Connection) 
Real-time Online User List 
Syslog Client 
Backup and Restore System Settings
LanguagesChinese (Traditional & Simplified), Czech, Danish, Dutch, English, Finnish, French, German, Italian, Japanese, Korean, Norwegian, Polish, Russian, Spanish, Swedish
Supported Web BrowsersInternet Explorer 7, 8
Safari 3, 4
Firefox 3 
Google Chrome