QNAP TS-879U-RP - TS-1253 U and TS-1253 U-RP Specifications; IS-453 S Specifications

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System TS-1253U TS-1253U-RP
CPU
Quad-core
Intel
®
Celeron™
2.0GHz (up to
2.42GHz)
Quad-core
Intel
®
Celeron™
2.0GHz (up to
2.42GHz)
Memory
4GB/8GB DDR3L
(Expandable RAM, up
to 8GB)
4GB/8GB DDR3L
(Expandable RAM, up
to 8GB)
Flash 512MB (USB DOM) 512MB (USB DOM)
Memory
replaceable
✔ (Compatible with
DDR3L RAM)
✔ (Compatible with
DDR3L RAM)
Number of RAM
slots
2 (SODIMM) 2 (SODIMM)
Number of hard
drive slots
12 12
Power supply unit 250W 2 x 250W
System IS-453S
CPU
Quad-core
Intel
®
Atom™
1.91GHz
Memory
IS-453S-2G: 2GB
DDR3L
IS-453S-8G: 8GB
DDR3L
Flash 512MB (USB DOM)
CPU replaceable -
Memory
replaceable
✔ (Compatible with
DDR3L-1333/1600S
ODIMM RAM)
Number of RAM
slots
2 (SODIMM)
Number of hard
drive slots
4 (2.5" only)