US catalogue
NAS enclosures / Manufacturer
Compare the listed models, check each US purchase package and follow the original sources.
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A two-bay diskless NAS with a Realtek processor, 1 GB of factory DDR4 memory and one Gigabit Ethernet port. Using 2.5-inch drives requires an optional mounting holder.
Purchase packages
Synology DS223j — diskless 1 GB US package
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A two-bay diskless NAS with separate 2.5GbE and 1GbE ports. Its standard memory configuration is 2 GB, with a documented expansion path.
Purchase packages
Synology DS225+ — diskless 2 GB US package
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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.
Purchase packages
Synology DS425+ — diskless 2 GB US package
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A four-bay diskless NAS with ECC memory, two 2.5GbE ports and two M.2 NVMe slots. A compatible expansion enclosure is a separate purchase.
Purchase packages
Synology DS925+ — diskless 4 GB ECC US package
Plan capacity, redundancy and future growth together. Drive bays are not usable terabytes, and RAID is not a separate backup.
Check the NAS, switch, cables and client. Link speed is a hardware rating, not a measured file-transfer result.
Use the exact hardware revision, memory rules and current drive compatibility list. OS updates can change supported configurations.