Form Factor : Tower

CPU : Intel Celeron J3455 quad-core 1.5 GHz processor (burst up to 2.3 GHz)

Graphic Processors : Intel HD Graphics 

System Memory : 4 GB SO-DIMM DDR3L (2 x 2 GB)

Maximum Memory : 8 GB (2 x 4 GB)

Memory Slot : 2 x SO-DIMM DDR3L

For dual-DIMM configuration, you must use a pair of identical DDR3L modules.

Flash Memory : 4 GB (Dual boot OS protection)

Drive Bay : 6 x 3.5-inch SATA 6Gb/s, 3Gb/s

The system is shipped without HDD.

For the HDD compatibility list, please visit https://www.qnap.com/compatibility/

Drive Compatibility 3.5-inch SATA hard disk drives

2.5-inch SATA hard disk drives

2.5-inch SATA solid state drives