QNAP TS-453E Repair Manual

8. Glossary
air shroud
Thin plastic covering for directing airow from fans
backplane
A circuit board that serves as an extension to the system board. QNAP backplanes typically contain
slots for connecting hard disk drives and solid-state drives with the use of drive trays.
circuit board
A hard, at sheet with electrical connections printed on the surface. Examples of circuit boards include
system boards, backplanes, and riser cards.
drive cage
An enclosure with slots for inserting and securing drive trays
fan duct
Thin plastic covering for creating a tunnel to direct airow from fans
at head screw
A screw whose head has a tapered edge and a at top that is level with the surface when fully screwed
in
heatsink
A device with parallel ns that help transfer and dissipate heat from an electronic unit (such as a CPU
or memory module)
LCD display module
A unit containing an LCD panel and a supporting circuit board
mounting holes
Screw holes in circuit boards for attachment to a surface
pan head screw
A screw whose head has a straight edge and protrudes from the surface when fully screwed in
| NAS Repair Manual
Glossary 173

QNAP TS-453E Specifications

General

GPU	Intel UHD Graphics
Flash Memory	4 GB (Dual boot OS protection)
Drive Bays	4 x 3.5-inch SATA 6Gb/s, 3Gb/s
Hot-swappable	Yes
M.2 SSD Slot	2 x M.2 2280 PCIe Gen3 x1
SSD Cache Acceleration Support	Yes
Network Interface	2 x 2.5GbE RJ45
Form Factor	Tower
LED Indicators	Status, LAN, USB, HDD 1-4
Kensington Security Slot	Yes
Operating System	QTS 5.0
Processor	Intel Celeron J6412
CPU Architecture	64-bit x86
Memory	8 GB DDR4 (4 GB x 2)
Memory Slot	2 x SO-DIMM
Drive Compatibility	3.5-inch SATA hard disk drives, 2.5-inch SATA solid state drives
Maximum Internal Raw Capacity	64 TB (16 TB drive x 4)
Buttons	Power, Reset
Power Supply Unit	100-240V
Fan	1 x 120mm
Operating Temperature	0°C to 40°C (32°F to 104°F)
Operating Humidity	5% to 95% RH