QNAP TS-855EU-RP. Type: NAS. Chassis type: Rack (2U). Device class: Small & Medium Business. Processor family: Intel Atom®, Processor model: C5125, Processor frequency: 2.8 GHz. Internal memory: 8 GB, Internal memory type: DDR4. Total installed storage capacity: 0 TB. Operating system installed: QuTS hero

Storage drives installed	No
Total installed storage capacity	0 TB
Number of storage drives supported	8
Installed storage drive type	No
Supported storage drive types	HDD & SSD
RAID support	Yes
Supported storage drive interfaces	Serial ATA II, Serial ATA III
Storage drive sizes supported	2.5,3.5,M.2
Number of M.2 (M & B) slots	2
RAID levels	0, 1, 5, 6, 10, 50, 60
Online RAID migration	Yes
Online RAID expansion	Yes
RAID rebuild	Yes
Hot-swap drive bays	Yes
Processor family	Intel Atom®
Processor manufacturer	Intel
Processor model	C5125
Processor frequency	2.8 GHz
Processor cores	8
Processor threads	8
Processor cache	9 MB
Internal memory	8 GB
Internal memory type	DDR4
Maximum RAM supported	64 GB
Memory slots	2
Memory form factor	SO-DIMM
Flash memory	5000 MB
Ethernet LAN	Yes
Ethernet LAN data rates	10,100,1000,2500 Mbit/s
DHCP server	Yes
Jumbo frames support	Yes
iSCSI support	Yes
Wake-on-LAN ready	Yes
Ethernet LAN (RJ-45) ports	2
USB port	Yes
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	4
PCI Express x4 (Gen 3.x) slots	2
Chassis type	Rack (2U)
Cooling type	Active
Product color	Black
Number of fans	3 fan(s)
Fan diameter	2.36" (6 cm)
LED indicators	Yes
Type	NAS
Device class	Small & Medium Business
Backup function	Yes
Buzzer	Yes
Multilingual support	Yes
Snapshot	Yes
Web-based management	Yes
Share folder access right management	Yes
Security algorithms	AES
Reset button	Yes
On/off switch	Yes
Operating system installed	QuTS hero
Operating system version	h5.0.1
Windows operating systems supported	Windows 10, Windows 7, Windows 8
Linux operating systems supported	CentOS 7.0, Ubuntu 14.04, Yes
Mac operating systems supported	Mac OS X 10.10 Yosemite, Yes
Power supply location	Built-in
Power supply unit (PSU) capacity	300 W
Number of power supply units	2
Power consumption (typical)	78.73 W
Power consumption (sleep)	54.331 W
AC input voltage	100 - 240 V
Fan voltage	12 V
Width	17" (432 mm)
Depth	11.7" (297.4 mm)
Height	3.49" (88.6 mm)
Weight	18 lbs (8.15 kg)
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	5 - 95%
Storage temperature (T-T)	-20 - 70 °C