Synology E25G21-F2 Dual 25G SFP+ PCIe 3.0 Adapter, 2x25G SFP28 Ports, Link Aggregation, Supports SFP+ Modules, For Select Synology Devices | E25G21-F2

Availability:
In Stock
Product Code:
E25G21-F2
Brand:
Synology
QAR 1,563.80 QAR 1,535.34

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Update Last Updated: 2025-07-10 08:20:14
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Boost your data throughput to support bandwidth-heavy workflows, such as high-resolution videos, with the E25G21-F2 Dual 25G SFP+ Port PCIe 3.0 Adapter from Synology. Designed specially for select Synology NAS systems, this network adapter installs into an available PCIe 3.0 x8 slot, adding two 25 Gigabit SFP28 ports. These ports also support optical SR, optical LR, and DAC transceiver modules to optimize connectivity. You can also combine both ports using link aggregation for higher simultaneous throughput, port failover, and load balancing. Additionally, built-in CPU offloading technologies help to reduce the host system's network transfer overhead to further enhance performance. Both low and full-height brackets are included.

 

Key Features
  • For Select Synology Devices
  • PCIe 3.0 x8 Host Interface
  • 2 x 25G SFP28 Ports
  • Supports SFP+ Modules
  • Link Aggregation
  • CPU Offloading Technologies
  • Includes Low & Full Height Brackets

 

 

 

Specifications
 
 
General
Host Bus InterfacePCIe 3.0 x8
 Bracket HeightLow Profile and Full Height
 Size (Height x Width x Depth)69 mm x 168 mm x 17.3 mm
 Operating Temperature0°C to 40°C (32°F to 104°F)
 Storage Temperature-20°C to 60°C (-5°F to 140°F)
 Relative Humidity5% to 95% RH
 Warranty5 Years
 Notes

The warranty period starts from the purchase date as stated on your purchase receipt.

Network
IEEE Specification Compliance
  • IEEE 802.3ad Link Aggregation
  • IEEE 802.3ae 10Gbps Ethernet
  • IEEE 802.3by 25Gbps Ethernet
 Data Transfer Rates25 Gbps
 Supported Features
  • TCP Segmentation Offload (TSO)
  • Large Send Offload (LSO)
  • Receive Side Scaling (RSS)
  • Generic Receive Offload (GRO)
  • Generic Segmentation Offload (GSO)
  • 1.5 - 9 KB Jumbo Frame
  • Offloaded storage over Ethernet
  • Non-offloaded storage over Ethernet
  • Auto-negotiation between 10Gb/s and 25Gb/s
  • TCP/UDP Checksum Offload
  • Transmit side scaling (TSS)
  • SR-IOV
Compatibility
Applied Models
  • FS series:FS6400, FS3600, FS3400, FS3017, FS2017, FS1018, FS3410, FS2500
  • HD series:HD6500
  • SA series:SA3600, SA3400, SA6400, SA3610, SA3410, SA3200D
  • UC series:UC3200
  • 23 series:RS2423RP+, RS2423+, DS1823xs+
  • 22 series:RS822RP+, RS822+, DS3622xs+, DS2422+
  • 21 series:RS4021xs+, RS3621xs+, RS3621RPxs, RS2821RP+, RS2421RP+, RS2421+, RS1221RP+, RS1221+, DS1821+, DS1621xs+, DS1621+
  • 19 series:RS1619xs+
  • 18 series:RS3618xs, DS3018xs
  • 17 series:RS18017xs+, RS4017xs+, RS3617xs+, RS3617RPxs, DS3617xs, DS3617xsII
 Notes
  • DSM version requirement: 6.2.3-25426 or later version
  • SR-IOV support requires DSM 7.1.1-42962 and is not available on the following units: UC3200, FS3410, FS3017, SA3200D, and DS1621+.
General
Brand
  • Synology
Model
  • E25G21-F2
Microless SKU
  • 120241
Date first available
  • 12 May, 2023
Shipping Weight
  • 0.20 Kg
Shipping Dimensions
  • 6.90 cm x 16.00 cm x 1.70 cm

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