High-speed network port flexibility
MikroTik XQ+CM0000-XS+ in Dubai, UAE
A compact QSFP28-to-SFP28 converter for using compatible 1G, 10G, or 25G SFP-family modules in supported MikroTik QSFP28 ports. It helps network teams adapt high-speed switch ports to practical link requirements while preserving existing module investments where compatibility is confirmed.
Before you order
Confirm the host switch, exact QSFP28 port, intended SFP/SFP+/SFP28 module, target speed, cable type, and deployment topology.
The adapter changes the physical port format; it does not guarantee every module or speed combination will be supported by every device.
Direct answer for buyers
The MikroTik XQ+CM0000-XS+ is a passive port-format converter intended to let a compatible SFP, SFP+, or SFP28 module operate from a supported QSFP28 port. Its main value is flexibility: a network team can use a 1G, 10G, or 25G module where a full 40G or 100G link is unnecessary. It is most relevant to organisations deploying selected MikroTik high-speed switches, especially where existing optics or DAC connectivity must be retained. Before proceeding, confirm the exact switch model, port operating mode, module coding, target link speed, remote-end interface, cable medium, and environmental requirements. FourTeck can help review these details before preparing a quotation.
What the converter does
A QSFP28 port is physically larger than an SFP28 port and is commonly associated with 100 Gigabit connectivity. The XQ+CM0000-XS+ fits into the QSFP28 cage and presents a slot for a compatible SFP-family module. This allows the host port to be used for a lower-speed single-lane connection when the switch, firmware, module, and link partner support the intended operating mode.
The product is useful when a network design does not require every QSFP28 port to run at its maximum aggregate capacity. It can also reduce unnecessary replacement of serviceable SFP modules, though reuse should be based on a verified compatibility plan rather than connector shape alone.
Who should consider it
The adapter may suit enterprise network administrators, data-centre teams, managed service providers, system integrators, laboratories, campus networks, and service-provider environments using selected MikroTik CRS switches with QSFP28 ports. It is especially relevant when a specific server, storage appliance, router, uplink, or test device exposes an SFP28, SFP+, or SFP interface rather than QSFP28.
It is not an automatic solution for every QSFP or QSFP+ deployment. Buyers working with 40G-only hardware, breakout requirements, non-standard module coding, or third-party NICs should validate the exact topology before purchase.
Business challenges this adapter can help address
Mixed port formats
A high-speed switch may provide QSFP28 ports while a server, router, storage system, or optical link uses an SFP-family interface. The converter can bridge the physical format where the electrical and software requirements are also supported.
Existing module reuse
Organisations may already own suitable 1G, 10G, or 25G modules. Reusing them can simplify a phased network upgrade, provided each module is compatible with the selected switch and remote endpoint.
Right-sized connectivity
Not every device requires a 40G or 100G connection. A lower-speed link can be appropriate for management, backup, selected storage paths, legacy equipment, or staged migration designs.
Procurement clarity
The converter gives buyers another design option, but it also introduces compatibility questions. A reviewed bill of materials helps prevent purchasing an adapter, optic, or cable combination that cannot negotiate the required link.
Core capabilities at a glance
Product-fit decision matrix
| Requirement | Suitable when | Confirm before ordering |
|---|---|---|
| Use an SFP28 module in a QSFP28 port | The host port supports a single 25G lane mode with the selected module. | Switch model, RouterOS version, module type, and remote-end speed. |
| Use a 10G SFP+ link | The QSFP28 host and connected device can negotiate or be configured for 10G. | Autonegotiation behaviour, forced speed settings, optic or DAC support. |
| Retain a 1G module | The host device explicitly supports 1G operation through the adapter. | Module coding, link mode, media type, and distance. |
| Convert a 40G QSFP+ design to 25G | Only where the specific hardware architecture supports the requested lane rate. | Do not assume 40G QSFP+ automatically supports a 25G SFP28 lane. |
| Connect third-party servers or NICs | The full endpoint-to-endpoint compatibility has been verified. | NIC firmware, FEC settings, module acceptance, cable reach, and driver support. |
Verified technical information
| Brand | MikroTik |
|---|---|
| Product name | XQ+CM0000-XS+ |
| Product type | QSFP28 to SFP28 converter |
| Host-side format | QSFP28 |
| Accepted module formats | SFP, SFP+, and SFP28 |
| Supported data rates | 1G, 10G, and 25G |
| Tested ambient temperature | -20°C to +85°C |
| MTBF guidance | Approximately 100,000 hours at 25°C, as stated by MikroTik |
| Power requirement | No separate external power supply; operation depends on the host port and installed module |
| License requirement | No separate adapter license stated; host device configuration may be required |
| Related MikroTik switch examples | CRS504, CRS518, CRS510, and CRS520 families are referenced by MikroTik; exact model and port compatibility must be confirmed |
| UAE availability | Contact FourTeck for current options, quantity review, and vendor lead-time guidance |
Compatibility and dependency notice
The XQ+CM0000-XS+ is a physical and electrical format adapter, not a universal protocol translator. The host device must support the selected single-lane speed, and the installed module must be accepted by the host system. The remote endpoint must use a matching speed, optical standard, wavelength, fibre type, connector, FEC mode, and link configuration where applicable.
A QSFP+ 40G port should not automatically be assumed to deliver a 25G SFP28 link. Likewise, successful use in one MikroTik switch does not prove operation in every switch, router, server NIC, or third-party platform. Share the exact part numbers on both ends of the link so FourTeck can help identify questions that should be resolved before ordering.
A practical purchase and deployment journey
Identify both endpoints
Record the exact switch model and port, the remote device model and port, and the intended link purpose. This avoids designing from connector appearance alone.
Select speed and medium
Choose 1G, 10G, or 25G and confirm whether the link uses fibre optics, a direct-attach copper cable, or another supported module type.
Validate compatibility
Review switch documentation, module support, firmware or RouterOS requirements, FEC behaviour, and any speed-forcing settings.
Request the bill of materials
Include converter quantity, module or DAC part numbers, cable length, spares, installation requirements, and delivery destination in the quotation request.
Install and test
Check module seating, link negotiation, error counters, temperature, throughput, and stability before placing the connection into production.
Preserving useful modules during network upgrades
High-speed switch upgrades often introduce a mismatch between new port formats and existing links. A business may deploy a 100G-capable MikroTik switch for future growth while still operating servers, routers, storage arrays, firewalls, monitoring appliances, or management systems at 1G, 10G, or 25G. Replacing every module and endpoint at the same time can add cost and operational risk without delivering immediate value.
The XQ+CM0000-XS+ can support a phased migration strategy by adapting a suitable QSFP28 port to an SFP-family module. This can be useful when the existing optic has the correct wavelength and reach, the remote endpoint remains in service, and both devices support the selected rate. It can also help a test environment reproduce mixed-generation network conditions without dedicating a separate switch to every interface type.
Reuse should still be selective. Older optics may have limited diagnostics, unsupported coding, unsuitable power consumption, or a temperature profile that conflicts with the new switch. Copper modules can run hotter than fibre modules, and dense placement can affect airflow. The procurement decision should therefore consider not only the purchase price of a new module, but also supportability, thermal behaviour, spare availability, documentation, and the operational cost of troubleshooting an uncertain combination.
Speed selection, lane behaviour, and link negotiation
QSFP28 is commonly used for four-lane 100G connections, while SFP28 normally carries one 25G lane. The adapter allows a compatible host to expose one SFP-family interface, but the switch must be able to map the selected port and lane correctly. In practical terms, the administrator may need to review RouterOS interface settings, advertised speeds, autonegotiation, forward-error-correction options, and the behaviour of the remote device.
A 25G connection may require compatible FEC settings on both ends. A 10G optic may work with different negotiation behaviour than a 25G optic. A 1G module can introduce additional restrictions because not all high-speed host ports support downshifting to 1G. When a link does not come up, swapping random settings can obscure the real cause. A structured test should confirm module detection, supported rates, transmit and receive power where available, link partner configuration, fibre polarity, and cable continuity.
For production networks, record the final working settings in the deployment documentation. This makes future replacement easier and prevents a later firmware change, switch replacement, or module swap from becoming an extended outage. FourTeck can include configuration assistance in the quotation where the project requires implementation support rather than supply-only procurement.
Thermal, physical, and operational planning
The converter itself is compact, but the installed module determines much of the real-world power and heat profile. Optical modules, passive DACs, active optical cables, and copper RJ45 transceivers behave differently. Copper 10G modules can consume more power and produce more heat than typical fibre optics, which matters in a dense switch where adjacent cages have limited airflow. Buyers should check the host device guidance for module power, spacing, and ambient-temperature limits.
Physical access also matters. The adapter adds another mechanical interface between the switch and the module. During installation, technicians should ensure the converter is fully seated, the module latch is accessible, and the cable is supported so that its weight does not pull on the cage. In racks with high cable density, a short labelling scheme can help identify the host port, adapter, module, and remote endpoint without disconnecting live links.
Operational testing should go beyond a simple link-up indication. Monitor packet errors, discards, flaps, optical power, module temperature, and negotiated speed under load. Where the connection carries storage, virtualisation, backup, or latency-sensitive traffic, test it with representative workloads. The adapter can be a practical part of a resilient design, but resilience depends on correct component selection, validated settings, spare planning, and documented recovery procedures.
Ideal environments and use cases
Enterprise aggregation
Use a high-capacity MikroTik aggregation switch while connecting selected routers, firewalls, servers, or management systems at lower rates. This can support a gradual transition to 25G or 100G without forcing every endpoint to move at once.
Data-centre migration
Maintain service to existing 10G or 25G equipment while new QSFP28 switching is introduced. The adapter may be useful for temporary or long-term links when the final topology and support requirements are documented.
Laboratory and validation racks
Testing teams often need mixed interface formats. A converter can reduce the number of switches required in a lab, though every new module and endpoint combination should still be tested before a production rollout.
Service-provider edge
A provider may reserve 100G-capable ports for growth while using selected ports for lower-speed handoffs, monitoring, or interconnection. Service design should confirm optical standards, demarcation responsibilities, and spare strategy.
Storage and backup links
Where a storage appliance or backup server presents SFP28 or SFP+, the adapter may provide a suitable physical path from a QSFP28 switch. Confirm FEC, MTU, throughput, redundancy, and vendor support before deployment.
Temporary project connectivity
Migration teams can use the adapter to maintain transitional links while old and new infrastructure coexist. Temporary does not mean unplanned: document settings and removal criteria to avoid permanent undocumented dependencies.
Integration and operational considerations
Module choice
Choose the module according to speed, medium, connector, wavelength, fibre type, distance, temperature, and the remote device. A 25G multimode optic for a short data-centre link has different requirements from a 10G single-mode optic across a campus. Direct-attach cables also have device and length limits. Do not assume that any module fitting the SFP-shaped slot will be suitable.
Switch configuration
The host port may require speed selection, autonegotiation changes, FEC configuration, or a particular RouterOS version. Configuration depends on the switch model and link partner. Capture a backup before changing production settings and test one link before rolling out multiple adapters.
Redundancy design
The adapter does not create redundancy. Where the link supports a critical service, consider dual switches, dual NICs, link aggregation, diverse cabling, or a documented spare. The chosen redundancy method must be supported by both endpoints and the wider network design.
Monitoring and maintenance
Include the adapted interface in network monitoring. Track link state, error counters, module diagnostics, temperature, and traffic utilisation. Keep the adapter and module part numbers in the asset record so replacement teams can reproduce the known-good combination.
Questions to resolve before requesting a quotation
Provide the full model number, not only the CRS family name, because port architecture and supported modes differ.
Specify 1G, 10G, or 25G and confirm the same speed is supported at the remote endpoint.
Share the manufacturer and part number, along with fibre type, distance, connector, and wavelength where relevant.
A switch, router, firewall, server NIC, or storage port can have different negotiation and support requirements.
Supply-only, remote configuration, onsite installation, testing, and documentation should be distinguished in the scope.
Quantity affects procurement planning, lead time, and whether a local spare should be included.
Procurement checklist
How FourTeck can assist
FourTeck can review the intended link, clarify the required speed and medium, help organise the bill of materials, and coordinate a quotation for the converter and related components. This may include suitable MikroTik switches, SFP-family modules, direct-attach cables, optical cabling, rack accessories, and installation or configuration services where required.
Compatibility assessment is strongest when the buyer provides complete endpoint information. FourTeck can highlight questions for confirmation, but final support may depend on current MikroTik documentation, third-party hardware policies, firmware versions, and the selected module. A test unit or proof-of-concept may be appropriate for unusual combinations.
Explore FourTeck networking products or discuss an implementation through our technology services team.
Support pathway
Requirement review: identify endpoints, speed, medium, quantity, and timeline.
Selection guidance: align the converter with modules, cables, and a supported host platform.
Quotation coordination: confirm current UAE availability, lead time, and commercial terms.
Deployment planning: define supply-only, remote, or onsite assistance.
Operational handover: document final settings and test results where included in scope.
UAE availability and support guidance
Contact FourTeck to confirm current UAE availability for the MikroTik XQ+CM0000-XS+. Availability may depend on quantity, vendor lead time, the requested delivery date, and whether the order includes related modules, switches, cables, or services. A quotation should identify the exact product code, commercial terms, warranty guidance, and delivery coordination rather than relying on a generic online listing.
For projects in Dubai, Abu Dhabi, Sharjah, and Ajman, FourTeck can discuss requirement review, quotation coordination, delivery planning, and installation or configuration scope. Site access, rack readiness, change windows, cabling, testing, and documentation requirements should be raised before the order is finalised. Support activities are not automatically included with product supply and should be stated clearly in the quotation.
Use the FourTeck UAE contact page to share the intended switch model, module, quantity, and deployment location.
GCC Availability
FourTeck can assist GCC organisations evaluating the MikroTik XQ+CM0000-XS+ for mixed-speed network projects, data-centre upgrades, service-provider infrastructure, laboratories, and enterprise aggregation. Requirement review can cover the host switch, intended SFP-family module, target data rate, cable medium, remote endpoint, quantity, spare strategy, and any installation or configuration needs. Quotation and delivery planning may be coordinated for customers in the United Arab Emirates, Saudi Arabia, Kuwait, Qatar, Bahrain, and Oman, subject to the final destination and commercial scope.
Product availability, delivery schedules, service visits, vendor lead times, warranty handling, and technical support arrangements can vary by country, model, quantity, and project requirement. Buyers should provide the destination country, exact product code, quantity, preferred timeline, module details, and deployment location. For Kuwait-related coordination, customers may also review FourTeck Kuwait technology support. No local stock, customs outcome, fixed installation date, or country-specific certification should be assumed until confirmed in a formal quotation.
Africa Availability
Organisations planning MikroTik network upgrades in Africa can contact FourTeck for assistance with product evaluation, converter and module selection, quantity planning, accessories, configuration scope, and regional procurement coordination. The XQ+CM0000-XS+ may be relevant where a compatible QSFP28 switch must connect to existing 1G, 10G, or 25G equipment, but the full link should be reviewed before purchase. Buyers in East Africa and other regions can share the exact switch, module, endpoint, distance, cable type, project location, and support expectations for a more accurate response.
Availability and fulfilment can depend on the destination, product quantity, vendor lead time, shipping arrangements, power and environmental conditions, installation scope, and local project requirements. FourTeck does not assume immediate shipment, local inventory, customs outcomes, or country-wide onsite coverage. Customers can visit FourTeck Africa, FourTeck Kenya, or FourTeck Uganda for regional contact options and requirement discussion.
Related products and services to consider
MikroTik CRS504 series
Compact 100G switching platforms may be relevant where several QSFP28 ports are needed. Confirm the exact model, software, and intended lane configuration.
MikroTik CRS510 series
A mixed 100G and 25G switching design may reduce the number of adapters required. Compare native port availability with the planned endpoint mix.
MikroTik CRS518 series
Higher port density can suit enterprise or data-centre aggregation. Review redundancy, power, cooling, rack space, and switching requirements.
SFP28 optics and DACs
Select the exact module or cable by speed, reach, medium, connector, wavelength, temperature, and endpoint compatibility.
Network configuration support
Configuration assistance can include interface settings, VLANs, MTU, monitoring, link validation, and documentation when included in scope.
Fibre and rack planning
Review patching, polarity, cable management, airflow, labelling, spares, and access before deployment.
Why businesses contact FourTeck
A small adapter can determine whether a larger network design works as intended. Businesses contact FourTeck when they need help moving from a model name to a complete, reviewable requirement. That can include clarifying the host switch, matching the module and cable, checking the remote endpoint, identifying speed and FEC questions, planning spare units, and separating product supply from implementation services.
FourTeck can also coordinate related technology requirements across switching, routing, security, structured cabling, server connectivity, and rack infrastructure. The aim is to produce a clearer bill of materials and a quotation that reflects the actual deployment rather than a single isolated part number. Compatibility remains dependent on the specific devices, software versions, and module choices, so unusual combinations may need lab validation.
Learn more about FourTeck or contact the business technology team.
Frequently asked questions
What is the MikroTik XQ+CM0000-XS+ used for?
It is used to install a compatible SFP, SFP+, or SFP28 module in a supported QSFP28 port, enabling 1G, 10G, or 25G connectivity where the host and remote endpoint support the selected mode.
Does it convert every 40G QSFP+ port to 25G?
No. A 40G QSFP+ port should not be assumed to support a 25G SFP28 lane. The exact port architecture, supported rates, and device configuration must be checked.
Which speeds are officially listed for the converter?
MikroTik lists 1G, 10G, and 25G data rates. Actual operation depends on the host switch, installed module, remote device, and settings.
Can I use any SFP module?
No. The module must match the required speed and medium and must be supported by the host and remote endpoint. Module coding, power, temperature, wavelength, fibre type, and distance can all matter.
Does the adapter require a separate license?
MikroTik does not state a separate license for the adapter. The host device may still require configuration, a suitable RouterOS version, or supported interface settings.
Can FourTeck confirm compatibility before purchase?
FourTeck can review the supplied device and module details, identify compatibility questions, and help prepare the bill of materials. Final confirmation may depend on current vendor documentation or practical testing.
Is the XQ+CM0000-XS+ available in Dubai?
Contact FourTeck to confirm current UAE availability. Quantity, vendor lead time, delivery destination, and related component requirements can affect the quotation.
Can installation and configuration be included?
Yes, where required, installation, interface configuration, link testing, and documentation can be discussed as a separate scope in the quotation.
What information is needed for an accurate quote?
Provide the exact switch model, converter quantity, intended module or DAC, target speed, remote endpoint, cable distance, deployment country, required timeline, and any support services.
What warranty applies?
Warranty terms should be confirmed in the FourTeck quotation because coverage and handling can depend on the supply channel, destination, and current vendor policy.
Confirm the full link before ordering
Share your MikroTik switch model, intended SFP-family module, target speed, remote device, quantity, and project location. FourTeck can coordinate compatibility questions, current UAE availability, and a quotation aligned with the actual deployment.
