A Look Inside

Taking this NAS apart completely is not hard, you just need to take some photos or, even better, shoot a video to remember which screw goes where. Please note that installing a SO-DIMM memory stick or NVMe drives means removing the lid of the chassis, which only takes a Phillips screwdriver for the screws on the rear.


A view at the chassis. I didn't bother removing the front PCB and board that holds the LCD screen.


This is the board with the front USB 3.0 port, LED indicators, and power and copy buttons.


The LCD board uses a Weltrend controller.


The mainboard is small, with the CPU heatsink covering a significant portion of it.


A 4 GB SO-DIMM memory stick clocked at 2400 MHz occupies the RAM slot that is not easily accessible.


The empty RAM slot is on the back of the board.


The Intel Celeron J4125 (Gemini Lake) quad-core CPU is considerably faster than its Apollo Lake predecessor. With a TDP of only 10 W, it doesn't need active cooling.


The IC that handles system monitoring and fan control is an ITE IT8625E.


The mainboard's power phases which handle the CPU and RAM slots.


A pair of Realtek RTL8125B 2.5 Gbit controllers handle both Ethernet ports. On top of these is an Asmedia ASM2806 PCIe bridge controller.


An ASMedia ASM1464 handles the mainboard's USB 3.0 ports.


Two Macronix serial flash memory modules.


The board's eMMC is a Samsung KLM8G1GETF with a capacity of 8 GB.


The mainboard's battery that keeps the BIOS settings intact.


There is no free PCIe slot on the mainboard because one is occupied by the SATA expansion card, while the other is used by the board that hosts both optional NVMe drives.


There is an ASMedia ASM1061 controller on the SATA expansion card. Since this card only takes power from the PCIe slot, some polymer caps are used to deal with transient loads. Their capacity is low, but HDDs are not as demanding as other parts (e.g., CPUs or GPUs).


Y.S Tech makes the cooling fan, and its model number is FD121225HB. It uses a double-ball bearing, so it will easily cope with high operating temperatures.