US catalogue
Synology / NAS enclosures
A four-bay diskless NAS with an Intel Celeron J4125 processor, 2 GB of factory memory, one 2.5GbE port and one Gigabit port. Two M.2 NVMe slots support qualified SSD configurations, while the documented memory ceiling is 6 GB.
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Check supported drive form factors and capacity limits for this exact model.
Review due. Check the current source before buying.
A shared model name can cover different factory memory configurations.
Factory DDR4 non-ECC; an additional memory module is not included.
Review due. Check the current source before buying.
Do not add port speeds together or treat this as measured throughput.
Fastest single supplied port; the separate Gigabit port is not added to this value.
Review due. Check the current source before buying.
Includes main unit, accessory pack, AC adapter and cord, and two LAN cables. Optional RAM, storage drives and extended warranty are separate.
Review due. Check the current source before buying.
Select: New MFR DS425+, B&H SYDS425P; standard diskless enclosure with factory 2 GB onboard RAM; no data drives, M.2 SSDs or additional memory.
View at B&H — Synology DS425+ — diskless 2 GB US package; opens in a new tabThe link may open several packages. Check current price and availability with the seller. Opens in a new tab.
These packages exclude user-storage drives. Operating-system boot storage is not included data-drive capacity. Drives, network equipment and software compatibility need separate checks.
Open a field explanation or source for its conditions.
| Compare the details | Synology DS425+ — diskless 2 GB US package |
|---|---|
| US purchase package | New MFR DS425+, B&H SYDS425P; standard diskless enclosure with factory 2 GB onboard RAM; no data drives, M.2 SSDs or additional memory. Includes main unit, accessory pack, AC adapter and cord, and two LAN cables. Optional RAM, storage drives and extended warranty are separate. Sources · 2026-09-13B&H: Synology DS425+ US diskless enclosure listingChecked 2026-09-13. We read the original webpage on the check date.Synology: DiskStation DS425+ US hardware and software specificationsChecked 2026-09-13. We read the original webpage on the check date.Synology: DSM 7.3 drive-policy announcement for 2025 DiskStation modelsChecked 2026-09-13. We read the original webpage on the check date.Review due. Check the current source before buying. |
| External rating | |
Main drive baysBays for the main SATA storage drives, excluding separate M.2 slots. Check supported drive form factors and capacity limits for this exact model. | 4 baysSource · 2026-09-13Synology: DiskStation DS425+ US hardware and software specificationsChecked 2026-09-13. We read the original webpage on the check date.Review due. Check the current source before buying. |
Included data drivesUser-storage drives supplied in this purchase package. These diskless packages require separately purchased compatible drives. | 0 drivesBase enclosure; SATA drives and M.2 SSDs are sold separately.Sources · 2026-09-13Synology: DiskStation DS425+ US hardware and software specificationsChecked 2026-09-13. We read the original webpage on the check date.B&H: Synology DS425+ US diskless enclosure listingChecked 2026-09-13. We read the original webpage on the check date.Review due. Check the current source before buying. |
Supplied RAMInstalled system memory in the exact listed package. A shared model name can cover different factory memory configurations. | 2 GBFactory DDR4 non-ECC; an additional memory module is not included.Source · 2026-09-13Synology: DiskStation DS425+ US hardware and software specificationsChecked 2026-09-13. We read the original webpage on the check date.Review due. Check the current source before buying. |
Official maximum RAMThe maximum memory stated by the manufacturer for the reviewed revision. This does not endorse unofficial upgrades or establish application performance. | 6 GB2 GB onboard plus one supported 4 GB SODIMM.Source · 2026-09-13Synology: DiskStation DS425+ US hardware and software specificationsChecked 2026-09-13. We read the original webpage on the check date.Review due. Check the current source before buying. |
Memory can be upgradedWhether the reviewed hardware revision has a documented memory upgrade path. Check socket layout, supported modules and any revision changes. | YesOne expansion slot; Synology lists the D4NS01-4G module and its support conditions.Source · 2026-09-13Synology: DiskStation DS425+ US hardware and software specificationsChecked 2026-09-13. We read the original webpage on the check date.Review due. Check the current source before buying. |
Fastest Ethernet portHighest nominal speed of one supplied Ethernet port. Do not add port speeds together or treat this as measured throughput. | 2.5 Gb/sFastest single supplied port; the separate Gigabit port is not added to this value.Source · 2026-09-13Synology: DiskStation DS425+ US hardware and software specificationsChecked 2026-09-13. We read the original webpage on the check date.Review due. Check the current source before buying. |
Supplied Ethernet portsNumber and nominal speed of the included Ethernet ports. Check your network and the software conditions for link aggregation or failover. | 1 × 2.5GbE + 1 × 1GbESource · 2026-09-13Synology: DiskStation DS425+ US hardware and software specificationsChecked 2026-09-13. We read the original webpage on the check date.Review due. Check the current source before buying. |
M.2 slotsBuilt-in M.2 storage slots where documented. Slot presence does not guarantee every drive or storage-pool use; check the compatibility list. | 2 slotsM.2 2280 NVMe. M.2 storage pools and cache require drives on Synology’s hardware compatibility list.Sources · 2026-09-13Synology: DiskStation DS425+ US hardware and software specificationsChecked 2026-09-13. We read the original webpage on the check date.Synology: DSM 7.3 drive-policy announcement for 2025 DiskStation modelsChecked 2026-09-13. We read the original webpage on the check date.Review due. Check the current source before buying. |
ProcessorThe processor identified for this hardware model. Processor identity alone does not predict application, transcoding or file-serving performance. | Intel Celeron J4125Source · 2026-09-13Synology: DiskStation DS425+ US hardware and software specificationsChecked 2026-09-13. We read the original webpage on the check date.Review due. Check the current source before buying. |
| Questions to check before buying | As checked 13 September 2026, DSM 7.3 permits non-validated third-party drive installation and storage pools on 2025 DiskStation models; M.2 cache and pools retain hardware-compatibility-list requirements. Check exact drive and memory compatibility. Processor identity and port ratings do not establish transcoding support or transfer performance. |
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