QNAP TRX-25GSFP28-SR Compatible 25GBASE-SR SFP28 for QSW-M5216 Switch and 25G NAS Expansion
QNAP compatible TRX-25GSFP28-SR - Key Features
- Compatibility: QNAP
- Media Type: Multi-Mode Fiber (MMF) -OM3/OM4/OM5
- Fiber Count: Duplex
- Connector: Double LC/UPC
- Maximum Distance: 100 m
- Average Link Budget: 5.3 dB
- Tx Wavelength: 850 nm
- Supported Data Rate: 8.5 Gbps - 25.78 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Standard 0°-70°C
QNAP TRX-25GSFP28-SR Price
In Stock - Ships Next Business DayQNAP compatible TRX-25GSFP28-SR Specifications
Form Factor | SFP28 |
Media Type | Multi-Mode Fiber (MMF) -OM3/OM4/OM5 |
Fiber Count | Duplex |
Connector | Double LC/UPC |
Maximum Distance | 100 m |
Average Link Budget | 5.3 dB |
TX Wavelength | 850 nm |
RX Wavelength | 850 nm |
Supported Data Rate | 8.5 Gbps - 25.78 Gbps |
Supported Ethernet Applications | 10G Ethernet (10.31Gbps), 25G Ethernet (25.78Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | Host FEC Supported |
Transmitter Type | VSCEL Laser |
Average Launch Power (Min) Each Lane | -5 dBm |
Average Launch Power (Max) Each Lane | 2.4 dBm |
Extinction Ratio (Min) | 3 dB |
Receiver Type | PIN photodiode |
Rx Wavelength Bandwidth | 20 nm |
Average Receiver Sensitivity (Min) Each Lane | -10.3 dBm |
Average Receiver Sensitivity (Max) Each Lane | 2.4 dBm |
Receiver Overload | 2.4 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 0.3 W |
Power | +3.3V single power supply |
Compliance | SFF-8432, CE, Class 1 FDA and IEC60825-1 Laser Safety Compliant, RoHS, SFF-8431, SFF-8472, SFP28 MSA |
QNAP compatible TRX-25GSFP28-SR Datasheet
v3Complete technical specifications and product details
QNAP compatible TRX-25GSFP28-SR Description
EdgeOptic's TRX-25GSFP28-SR compatible is a QNAP-coded 25GBASE-SR SFP28 transceiver, a direct replacement for QNAP's TRX-25GSFP28-SR optic. It ships with QNAP-recognized EEPROM so QNAP QSW switches and 25G-capable NAS expansion cards identify the module under standard transceiver identification. TRX-25GSFP28-SR is QNAP's own SKU for the 25G short-range SFP28 optic used across QNAP's QSW-M5216 switch line and NAS units with 25G PCIe expansion.
Optical performance follows IEEE 802.3by Clause 112: 100m on OM4 or OM5 multimode fiber, 70m on OM3. Transmit power is -8.4 to +2.4 dBm, receive sensitivity -10.3 dBm, with a 5.3 dB link budget using host RS-FEC (IEEE 802.3by Clause 108). The module uses an 850nm VCSEL transmitter, a PIN photodiode receiver, and an LC/UPC duplex connector. DOM telemetry is exposed per SFF-8472. Line rate is 8.5 to 25.78 Gbps. The module is dual-rate and operates at 10GBASE-SR (IEEE 802.3ae) as well as 25GBASE-SR, with active port speed selected by the host platform. Power consumption is 0.3W maximum over the 0 to 70°C case temperature range.
The TRX-25GSFP28-SR sits on the QSW-M5216-1T and other QSW-M5216 series 25G SFP28 switches, and on QNAP NAS units equipped with a 25G SFP28 PCIe expansion card. A common deployment pairs a QSW-M5216 25G top-of-rack with QNAP NAS units running 25G PCIe expansion for high-throughput storage fabrics; the SFP28 ports on both sides accept TRX-25GSFP28-SR directly. For deployments that mix 25G and existing 10G infrastructure, the module supports both 25GBASE-SR and 10GBASE-SR; active port speed depends on QSW firmware port configuration and the link partner's capability.
QNAP does not publish a third-party optic policy at the same depth as Cisco or Arista, and QSW firmware validates transceivers against its internal vendor table at insertion time. EdgeOptic's QNAP-recognized EEPROM coding is the mitigation at the hardware-identification layer. The module presents to QSW and QNAP NAS expansion cards under standard transceiver identification. The QNAP TRX-25GSFP28-SR accessory page is the definitive reference for a given QSW firmware release; confirm against the accessory page before bulk orders.
DOM parameters (transmit power, receive power, temperature, laser bias, supply voltage) are accessible through the QSW management interface and the QNAP NAS QTS/QuTS hero storage-network dashboards where the platform exposes them. Every unit is factory-tested to the 25GBASE-SR optical specification per IEEE 802.3by Clause 112. Certifications: CE, RoHS, Class 1 FDA, IEC 60825-1.
For QSW firmware compatibility confirmation on a specific QNAP switch or NAS release, multi-unit TRX-25GSFP28-SR volume pricing on a storage-fabric refresh, or OM3-versus-OM4 cabling guidance on an existing fiber plant, contact our sales team and we will respond within one business day.
Frequently Asked Questions
Is the TRX-25GSFP28-SR compatible with the QNAP QSW-M5216 switch?
Yes. TRX-25GSFP28-SR is QNAP's own SKU for the QSW-M5216 25G SFP28 switch family (including the QSW-M5216-1T) and for QNAP NAS units running a 25G SFP28 PCIe expansion card. EdgeOptic's compatible ships with QNAP-recognized EEPROM, so the module is identified under the standard transceiver table on QSW firmware. The QNAP TRX-25GSFP28-SR accessory page is the definitive reference for a specific QSW firmware release. Confirm against the accessory page before ordering in bulk.
Does the TRX-25GSFP28-SR drop to 10G if the link partner is a 10GBASE-SR switch port?
Yes. The module is dual-rate and supports both 25GBASE-SR (IEEE 802.3by) and 10GBASE-SR (IEEE 802.3ae). Whether a QSW-M5216 25G port operates at 10G depends on the port-speed configuration in the active QSW firmware. Confirm with the QNAP TRX-25GSFP28-SR accessory page or QNAP support for the specific firmware release. That covers the common QNAP deployment path where a NAS running a 25G PCIe expansion connects to a 25G QSW-M5216 top-of-rack while other NAS units in the same rack still connect over legacy 10G uplinks.
Can the TRX-25GSFP28-SR run on existing OM3 multimode fiber, or does it require OM4?
Both OM3 and OM4 are supported. Reach is 70m on OM3 and 100m on OM4 or OM5. That covers nearly every in-rack and short inter-rack QNAP deployment on existing MMF plant. A QNAP user upgrading from 10G infrastructure to 25G generally has OM3 cabling already installed, and no re-cabling is required for spans under 70m. For runs between 70m and 100m, or for future headroom, OM4 is the cleaner choice.
Does the TRX-25GSFP28-SR expose DDM/DOM optical monitoring in QNAP management?
Yes. The module implements DOM per SFF-8472 (transmit power, receive power, laser bias, case temperature, supply voltage). QSW management interfaces expose the standard SFP28 telemetry surfaces, and QNAP NAS management dashboards (QTS and QuTS hero) surface optical power levels where the storage-network view supports transceiver-level detail. Specific visibility varies by firmware release, so consult the QSW or QTS release notes for the monitoring path on the active firmware image.