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NEMIX RAM
NEMIX RAM 16GB DDR4 2666 ECC UDIMM CL19 1.2V 2Rx8 Synology RS4021xs+ memory upgrade
16 GB DDR4-2666 ECC UDIMM module rated CL19 at 1.2 V for Synology RS4021xs+ NAS upgrades
- Capacity16GB
- SpeedDDR4 2666 (PC4 21300)
- ECCYes
- Buffered/RegisteredUnbuffered
- ChipsetMajor OEM Samsung, Micron, Hynix
- Voltage1.20V
- 16 GB capacity expands NAS storage for larger workloads
- ECC protection detects and corrects single-bit memory errors
- DDR4 2666 speed matches Synology RS4021xs+ specifications
- Low 1.2 V voltage reduces power draw and heat
- 288-pin UDIMM form factor installs directly in compatible slots
Synology RS4021xs+ 16 GB DDR4 2666 ECC UDIMM
This module adds 16 GB of DDR4 2666 memory to a Synology RackStation RS4021xs+ NAS. It runs at 1.2 V with CL19 latency and includes on-die ECC for data integrity. The single stick suits administrators who need to expand capacity in a validated configuration.
288-pin unbuffered UDIMM with major OEM chips
The stick uses a standard 288-pin DDR4 UDIMM form factor and is unbuffered, so it installs directly into the NAS memory slots without registered buffering. Chips are sourced from Samsung, Micron or Hynix depending on supply. No heat spreader is fitted, keeping the profile low for dense rack chassis.
Low-voltage DDR4 operation at 1.2 V
At 1.20 V the module draws minimal power and generates little heat inside a closed NAS enclosure. Passive cooling from system airflow is sufficient; no active fan is required on the DIMM itself. The ECC function corrects single-bit errors during sustained workloads without increasing voltage or noise.
Puntos fuertes
- 16 GB capacity expands NAS storage for larger workloads
- ECC protection detects and corrects single-bit memory errors
- DDR4 2666 speed matches Synology RS4021xs+ specifications
- Low 1.2 V voltage reduces power draw and heat
- 288-pin UDIMM form factor installs directly in compatible slots
Especificaciones
| Brand | NEMIX RAM |
|---|---|
| Series | Synology Compatible Series NAS Memory |
| Model | Synology DDR4 2666MHZ ECC Unbuffered UDIMM |
| Part Number | ME21300-628K1 |
| Capacity | 16GB |
| Speed | DDR4 2666 (PC4 21300) |
| ECC | Yes |
| Buffered/Registered | Unbuffered |
| Chipset | Major OEM Samsung, Micron, Hynix |
| Voltage | 1.20V |
| Compatible System | Synology |
| CAS Latency | CL19 |
| Heat Spreader | No |
| Type | 288-Pin DDR4 ECC UDIMM |
| Rank | 2Rx8 |
| Features | DDR4 ECC Unbuffered UDIMM Motherboard Compatible |
| Package Content | 16GB (1X16GB) DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 288-PIN ECC Unbuffered UDIMM |
Preguntas sobre este artículo
What DDR4 standard does the PC4-21300 rating cap the module at?
PC4-21300 corresponds to DDR4 2666, so the module runs at 2666 MT/s with CL19 latency.
What physical slot and pin count does this 288-pin UDIMM require?
It fits a standard 288-pin DDR4 UDIMM slot on the Synology RS4021xs+ motherboard.
How is the module installed and which orientation step is often missed?
Power off the NAS, open the chassis, align the notch on the 288-pin edge connector with the slot key, press firmly until the retention clips click.
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