This article covers 【拡張NIC】Synology E10G18-T2 [10GbE.

Overview

The Synology E10G18-T2 is a dual-port 10GbE network interface card designed exclusively for Synology NAS systems. It features two RJ-45 ports supporting 10GBASE-T and 1000BASE-T, with Link Aggregation capability for a combined throughput of up to 20Gbps. Hardware offloading reduces CPU load on the NAS, freeing resources for other tasks. This card uses standard CAT6 or better UTP cabling, making it a straightforward upgrade path for existing Synology NAS owners who need higher network bandwidth. It's a professional-grade solution for environments where large file transfers, virtualization, or multi-client access demand more than 1GbE can provide.

Connectivity & Compatibility

The E10G18-T2 is compatible with a specific range of Synology NAS models, including: FlashStation: FS3017, FS2017, FS1018 RackStation: RS1619xs+, RS1219+, RS3618xs, RS2818RP+, RS2418(RP)+, RS818(RP)+, RS18017xs+, RS4017xs+, RS3617xs+, RS3617RPxs, RS3617xs, RS18016xs+, RC18015xs+, RS3614xs+, RS3614(RP)xs, RS10613xs+, RS3413xs+, RS3412(RP)xs, RS3411(RP)xs * DiskStation: DS1819+, DS3018xs, DS1618+, DS3617xs, DS1817+, DS1517+, DS3615xs, DS3612xs, DS3611xs It uses standard RJ-45 connectors and requires CAT6 or higher UTP cables for reliable 10GbE operation. CAT6A is recommended for longer runs or higher signal integrity.

Product Info

Released around 2018, the Synology E10G18-T2 is a high-end expansion card positioned for professional and enterprise NAS users. It carries a standard two-year warranty (may vary by region). The package includes only the card itself; no low-profile bracket is included. Pricing is around ¥48,618 on Japan, which is competitive for a dual-port 10GbE NIC with full Synology DSM compatibility. The main value proposition is guaranteed compatibility and seamless integration with supported Synology NAS units.

Best Use Cases

Creative professionals handling large media files: Video editors, 3D artists, and photographers who store projects on a Synology NAS will see dramatic reductions in transfer times. A 100GB project that takes over 15 minutes on 1GbE can transfer in under 2 minutes with 10GbE. IT administrators running virtualized environments: Using a Synology NAS as iSCSI or NFS storage for VMware/Hyper-V clusters demands high bandwidth and low latency. The dual-port design also provides link redundancy for mission-critical setups. * Small offices with multi-user file server workloads: When several employees access the NAS simultaneously for large files (CAD, design, databases), the extra bandwidth prevents bottlenecks. However, this only makes sense if the NAS model is on the compatibility list. For home users with only occasional file access or those using unsupported NAS models, this card is overkill and incompatible.

Things to Consider

This card is strictly for Synology NAS systems — it cannot be installed in a standard PC. Always verify your NAS model is on the compatibility list before purchasing. To fully utilize 10GbE, your entire network path (switch, cables, client NICs) must also support 10GbE. Upgrading only the NAS side will leave a bottleneck elsewhere. Heat generation is notable under load. Ensure your NAS has adequate cooling and airflow to prevent thermal throttling or instability. ## FAQ
Q: Can I use this card in a regular desktop PC? A: No, it is designed exclusively for Synology NAS. Even if it physically fits in a PCIe slot, there are no drivers for Windows or Linux on standard PCs. Q: Do I need a 10GbE switch? A: For a multi-device network, yes. However, you can connect the NAS directly to a single PC using a standard Ethernet cable (no crossover needed for modern auto-MDI/X devices). Q: Will CAT5e cables work? A: 10GBASE-T officially requires CAT6 or better. CAT5e may work over very short distances but is not reliable. For stable 10GbE, use CAT6A or CAT7 cables.

Product Disclosure (Amazon)

  • Manufacturer: Synology
  • ASIN: B07J1X9T5Y
  • Note: This article covers a manufacturer-made product based on Amazon listing details.