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

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 Interface
PCIe 3.0 x8
Bracket Height
Low Profile and Full Height
Size (Height x Width x Depth)
69 mm x 168 mm x 17.3 mm
Operating Temperature
0°C to 40°C (32°F to 104°F)
Storage Temperature
-20°C to 60°C (-5°F to 140°F)
Relative Humidity
5% to 95% RH
Warranty
5 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 Rates
25 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+.