10 Gigabit multimode fibre connectivity
MikroTik S+85DLC03D in Dubai, UAE
Build a short-range 10G optical link between compatible network devices using a compact SFP+ transceiver designed for 850 nm multimode fibre. FourTeck can help verify the endpoint hardware, fibre type, patching requirements and quantity before quotation.
Confirm the complete optical link
Send the switch or router models at both ends, planned distance, existing fibre grade and required quantity. This prevents a 10G SFP+ module from being ordered for an unsuitable cage or cable plant.
Direct answer for buyers
The MikroTik S+85DLC03D is a 10G SFP+ optical transceiver for short-distance links over multimode fibre. It uses an 850 nm wavelength and dual LC connectivity, with a manufacturer-stated reach of up to 300 metres. It is mainly considered for switch-to-switch, router-to-switch, rack-to-rack or building-distribution links where both endpoints support the required optical interface. Before proceeding, confirm the SFP+ capability of each endpoint, the fibre grade and condition, LC polarity, cable distance, module pairing and environmental requirements. The transceiver should not be selected solely because a device has a physically similar SFP cage; port speed support and platform compatibility still need verification.
What it does
This module converts the electrical signal presented by a compatible SFP+ port into an optical 10G signal for transmission across a paired multimode fibre path. At the far end, a compatible optical module converts that signal back for the receiving switch, router or other network platform. The result is a compact fibre interconnect that can separate equipment racks, floors or nearby buildings without relying on a copper Ethernet run.
Who should consider it
The product may be appropriate for businesses, integrators, managed service providers, data-room operators and network teams that need a 10G short-reach optical connection. It is especially relevant when the installed cable is multimode fibre and the distance falls within the supported design limit. It is not the right choice for every fibre link: long-distance single-mode routes, 1G-only ports and incompatible connector plans require a different module.
Business challenges this module can address
A congested uplink
A legacy 1G uplink can become a bottleneck when multiple access switches, virtual hosts or storage systems share the same path. A properly designed 10G optical connection can provide greater link capacity, provided the connected platforms and traffic design can use it.
Distance beyond a rack cable
Direct-attach copper is practical inside or between nearby racks, but it is not intended for every route. Multimode fibre can support structured pathways across a larger equipment area while providing electrical isolation between endpoints.
Reusing multimode infrastructure
Where suitable multimode fibre already exists, the module may allow the organisation to use that cable plant for a 10G short-range link. Fibre grade, connector cleanliness, attenuation, splicing and total path length must still be assessed.
Separating network equipment
Routers and switches do not always sit in the same cabinet. The transceiver can form part of a controlled optical path between distribution points, subject to the network design and the availability of compatible ports at both ends.
Core capability band
Product-fit matrix
| Requirement | Suitable when | Confirm before ordering |
|---|---|---|
| 10G rack or room uplink | Both endpoints offer compatible SFP+ interfaces. | Port mode, software support and module recognition. |
| Existing multimode fibre | The route uses appropriate multimode fibre and falls within the optical budget. | Fibre grade, total length, splices, cleanliness and test results. |
| LC fibre termination | The patching arrangement uses the matching dual LC connector format. | Polarity and patch-cord type at both endpoints. |
| Link under 300 metres | The designed route remains within the manufacturer-stated maximum. | Actual measured path and margin for connectors or patch panels. |
| Long-distance campus link | Generally not the intended choice when the route exceeds short-reach limits. | Consider a suitable single-mode module and compatible fibre instead. |
Verified technical information
| Brand | MikroTik |
|---|---|
| Product code | S+85DLC03D |
| Product type | SFP+ optical transceiver |
| Data rate | 10G |
| Optical mode | Multimode |
| Wavelength | 850 nm |
| Connector | Dual LC |
| Maximum stated distance | Up to 300 metres |
| Tested compatibility | MikroTik identifies testing with CCR1036-8G-2S+ and CCR1036-8G-2S+EM; current platform compatibility should still be confirmed. |
| Third-party device use | The manufacturer states compatibility with non-MikroTik SFP devices, but host acceptance and support policies remain device dependent. |
| Power consumption guidance | MikroTik documentation references a maximum of approximately 0.8 W for this optical module. |
| Included components | Confirm current package contents with FourTeck. Fibre patch leads are not assumed to be included. |
| Warranty guidance | Confirm the applicable warranty terms, regional process and proof-of-purchase requirements in the quotation. |
| UAE availability | Contact FourTeck for current options, quantity-based lead time and delivery coordination. |
Compatibility and dependency notice
A physical SFP-shaped cage does not by itself prove that the MikroTik S+85DLC03D will operate at 10G. Some devices have 1G SFP ports only, while others provide SFP+ cages that can support 10G. The host device documentation, port configuration and operating software should be checked. At the opposite end, use a compatible transceiver designed for the same wavelength, speed and fibre medium. The transmit and receive strands must be crossed correctly through the LC duplex path.
The 300-metre figure is a maximum design reference, not permission to ignore cable quality. Patch panels, splices, contaminated connectors, tight bends and legacy multimode grades can increase loss or reduce link margin. For important infrastructure, request fibre testing and record the actual route rather than estimating the cable length from the floor plan.
A practical purchase and deployment journey
Identify both endpoint devices
Record the exact manufacturer, model and port used at each end. Note whether each port is SFP, SFP+, SFP28 or a multi-rate cage. This is the most important first step because optical module compatibility starts with the host interfaces.
Inspect the fibre route
Confirm that the installed medium is multimode fibre, determine its grade where possible, measure or document the total length, and identify every patch panel or splice. Check that dual LC connectivity is available or include suitable patch cords in the bill of materials.
Select and quote the complete pair
A fibre link normally needs a suitable optic at each end. Specify whether you need one replacement module, a matched pair for a new link, spare units or a larger rollout quantity. Add patch leads, cleaning supplies, labelling and installation services when required.
Install, clean and test
Keep dust caps in place until connection, inspect and clean fibre ends, seat the modules fully and verify polarity. Check link state, negotiated speed, optical diagnostics where available, error counters and application traffic before accepting the link.
Document the optical path
Record module serial numbers, device ports, patch-panel positions, fibre pair, length, test results and deployment date. Good documentation reduces troubleshooting time and helps procurement teams order the correct spare later.
10G capacity for focused uplinks
The module’s primary operational value is enabling a 10G optical path where the network design calls for more bandwidth than a 1G connection. Typical examples include a distribution-switch uplink, a router-to-core connection, a virtualisation host aggregation path or an inter-rack link. The transceiver provides the physical optical interface, but it does not by itself guarantee application performance. Throughput still depends on the switching or routing platform, packet processing, traffic pattern, configuration and any intermediate bottlenecks.
Buyers should identify why the link needs 10G and whether the connected equipment can sustain the expected traffic. This avoids upgrading only one part of a path while leaving a slower server interface, uplink or security appliance in place.
Multimode fibre for local infrastructure
The 850 nm design makes the S+85DLC03D a short-reach multimode optic. This can be a practical fit for data rooms, enterprise floors and nearby equipment spaces where multimode cabling is already installed. Multimode fibre can be easier to reuse in facilities that were originally built with an optical backbone, but its suitability depends on grade, length and condition.
Do not treat all multimode fibre as identical. Older cable grades may have different supported distances, and the end-to-end path may contain connectors or splices that affect loss. A fibre contractor or qualified network engineer can test the route. For a new installation, specify the fibre grade, connector type, labelling standard and testing deliverables as part of the project scope.
Operational simplicity with correct planning
A pluggable transceiver is physically straightforward to install, but reliable optical operation depends on disciplined preparation. The cage must support the module, the port must be configured appropriately, the fibre must be clean, and the far-end optic must match. When those elements are documented, replacement and expansion become much easier for the IT team.
The module also has a lower power profile than many copper 10G SFP+ alternatives, which can matter in dense switches. Thermal behaviour still depends on the host device, ambient temperature and airflow. Follow the equipment manufacturer’s installation guidance and avoid obstructing ventilation around densely populated cages.
Ideal environments and use cases
Office distribution
Connecting an access or distribution switch to a core switch across a floor or communications room where compatible multimode fibre is available.
Data-room interconnect
Linking compatible switches or routers across racks without using a longer copper connection, while preserving a clean structured-cabling design.
Service-provider equipment
Forming a short optical handoff or internal aggregation link when the connected platforms and service design require 10G multimode optics.
Lab and staging networks
Creating repeatable 10G fibre links for equipment testing, configuration validation, demonstrations or pre-deployment staging.
Campus technical rooms
Supporting a local-building optical path where the total route remains within limits and the fibre infrastructure has been validated.
Spare-parts planning
Holding a correctly identified replacement for an existing S+85DLC03D link, after verifying that the installed module and cable design match.
Integration and operational considerations
Port speed and negotiation
Check how each endpoint handles SFP+ speed configuration. Some platforms negotiate automatically, while others require the administrator to set the port to 10G or disable a conflicting mode. A module can be physically detected without the complete link becoming operational, so review both ends during troubleshooting.
Matched optical characteristics
Both ends must use compatible 10G multimode optics operating at the same wavelength and connector plan. One end cannot use an 850 nm multimode transceiver while the other end uses an unrelated long-range single-mode optic. For consistent procurement, record the exact module code used at each endpoint.
Fibre hygiene
Dust or oil on an LC end face can create loss and intermittent errors. Cleaning should be treated as a normal installation step rather than a reaction after failure. Use suitable inspection and cleaning tools, protect unused connectors, and avoid touching fibre end faces.
Monitoring and diagnostics
Where the host platform exposes optical diagnostic information, operations teams can review temperature, supply voltage, transmit power, receive power and bias current. These readings help with troubleshooting, but thresholds and availability depend on the module and device software. Link counters, interface errors and logs should also be reviewed.
Change control
Replacing an uplink optic can affect an important network path. Plan a maintenance window, back up the configuration, label the old and new modules, and define rollback steps. For redundant designs, confirm that traffic has moved to the alternate path before making a change.
Buyer questions to resolve before ordering
Provide the model and port designation for both endpoints, not only the brand name.
A 1G SFP cage may look similar but is not automatically suitable for this 10G module.
Confirm multimode grade, connector type, route length, patch panels and test history.
A new link usually requires a compatible optic at each endpoint; a repair may require only one.
Include fibre inspection, cleaning, patching, configuration and link testing in the requested scope when needed.
For critical links, consider keeping a verified replacement and recording where it is stored.
Procurement checklist
✓ Exact S+85DLC03D model code
✓ Required quantity and spare quantity
✓ Endpoint device models
✓ SFP+ port availability
✓ 10G port configuration support
✓ Multimode fibre grade
✓ Total route length
✓ Dual LC patch-cord requirement
✓ Patch-panel and splice details
✓ Installation and cleaning scope
✓ Testing and handover requirement
✓ Delivery destination and timeline
✓ Warranty confirmation
✓ Labelling and documentation needs
How FourTeck can assist
FourTeck can review the exact network requirement before preparing a quotation. The review can include endpoint compatibility, link distance, fibre type, connector format, quantity, spare requirements and any installation or configuration scope. This is useful for procurement teams that have received only a model code without the wider technical context, and for project teams that need a complete bill of materials rather than a single module line item.
For a replacement request, share photographs or diagnostic output from the existing module, the host device model and the reason for replacement. For a new link, provide a simple endpoint diagram and the cable route. FourTeck can then coordinate product quotation, suitable accessories and service scope. Visit the FourTeck product catalogue, review available network implementation services, or send the requirement through the Dubai technology enquiry page.
The final recommendation should reflect the full optical path. When the existing design is unsuitable for the S+85DLC03D, FourTeck can discuss another MikroTik optic, a compatible alternative, a direct-attach cable for short rack connections or a single-mode solution for a longer route. No alternative should be treated as equivalent until its speed, wavelength, distance, connector and host compatibility have been checked.
UAE availability and support guidance
Contact FourTeck to confirm current UAE availability for the MikroTik S+85DLC03D. Availability may depend on quantity, current vendor supply, shipment planning and the exact commercial requirement. Delivery and project coordination can be discussed after the endpoint models, fibre route and module quantity are confirmed. Where the transceiver forms part of a wider network upgrade, request a quotation that clearly separates hardware, accessories, installation, configuration, fibre testing and support. Buyers should also confirm the warranty process and any return conditions before purchase, particularly when modules will be deployed across several sites.
Dubai, Abu Dhabi, Sharjah and Ajman coverage
FourTeck can coordinate requirement review and quotation discussions for organisations deploying this module in Dubai, Abu Dhabi, Sharjah and Ajman. The level of assistance can range from supply-only procurement to a broader scope that includes compatibility checks, fibre patching, device configuration and link validation. Site access, installation timing, existing cabling condition and the number of endpoints can affect the project scope. Provide the deployment address, device list and preferred schedule so the quotation can reflect the practical work required rather than only the transceiver quantity.
GCC availability
Organisations planning 10G multimode links across GCC operations can contact FourTeck for requirement review, module selection, quotation coordination and deployment planning. Support may be discussed for projects in the United Arab Emirates, Saudi Arabia, Kuwait, Qatar, Bahrain and Oman, but product supply and service arrangements vary by destination. For the MikroTik S+85DLC03D, provide the endpoint hardware, quantity, fibre distance, connector plan and target deployment date. Availability, delivery schedules, service visits, project scope and vendor lead times can differ by country, quantity and requirement. Licensing is not normally the central purchasing factor for a passive optical transceiver, although the host platform may have software, support or configuration dependencies. FourTeck can also help identify patch leads, replacement optics and installation needs. Buyers should confirm the destination country, delivery location, required quantity, installation expectations and commercial timeline before relying on a project date.
Africa availability
FourTeck can assist organisations evaluating the MikroTik S+85DLC03D for network projects in Africa, including selected requirements in East Africa and other regional markets. Assistance can cover product identification, compatibility review, quantity planning, fibre accessory selection, quotation coordination and the definition of installation or support scope. Availability and fulfilment may depend on the destination, module quantity, shipping arrangements, vendor lead time, local import requirements and the condition of the customer’s fibre infrastructure. Buyers should provide the destination country, exact endpoint devices, link distance, multimode fibre details, required quantity and preferred deployment schedule. Where local installation is expected, share the site conditions and support requirement early so the commercial scope can be assessed. For regional enquiries, buyers may review FourTeck Africa technology support, Kenya project guidance or Uganda technology assistance. No local inventory, customs outcome or guaranteed delivery date should be assumed until the requirement is reviewed.
Related products and service options
MikroTik S+31DLC10D
A 10G single-mode option intended for longer optical links. It is not a drop-in equivalent for a multimode cable path; fibre type, distance and endpoint design must be reviewed.
MikroTik S+DA0001 or S+DA0003
Direct-attach cable options may suit very short connections between compatible SFP+ devices in the same or adjacent racks. Port support and required cable length should be confirmed.
Dual LC multimode patch leads
The correct fibre grade, connector polish, length and polarity are essential. Include patch leads in the bill of materials rather than assuming they are supplied with the optic.
Fibre inspection and testing
Testing and cleaning services can help identify loss, contamination, polarity issues or route defects before the new optical link is accepted.
Switch configuration support
Configuration assistance may cover port speed, VLANs, link aggregation, monitoring and validation, depending on the connected device and approved scope.
Network design consultation
For multiple links or a wider upgrade, a design review can align optics, switches, redundancy, cabling and capacity with the required business outcome.
Why businesses contact FourTeck
Optical modules are small components, but an incorrect selection can prevent an entire uplink from working. Businesses contact FourTeck to clarify model codes, compare short-reach and long-reach optics, review endpoint compatibility and assemble a complete bill of materials. Procurement teams can also request separate pricing for modules, patch leads, spares and services so approvals are easier to manage.
Technical teams may require assistance documenting the current network, identifying port types or testing the fibre route. Project owners may need delivery coordination across several sites and a clear distinction between supply, installation and configuration responsibilities. FourTeck’s role is to help organise these inputs and prepare a suitable quotation, without assuming unconfirmed stock, compatibility or installation dates.
For background on the organisation, visit about FourTeck Dubai. For a direct response on this model, use the contact page and include photographs, device models or a simple network diagram where available.
Frequently asked questions
What is the MikroTik S+85DLC03D used for?
It is used to create a 10G optical connection over multimode fibre between compatible SFP+ devices. Common applications include switch uplinks, router interconnections, rack links and short campus or building-distribution paths.
What distance does the module support?
MikroTik states a reach of up to 300 metres over multimode fibre. The usable distance depends on fibre grade, connector loss, splices, cable condition and the complete optical budget, so the route should be verified.
Can it be installed in a normal 1G SFP port?
Do not assume compatibility. The S+85DLC03D is a 10G SFP+ module, and a standard 1G-only SFP cage may not support it. Check the exact host-device documentation and supported port modes.
Does the module use single-mode or multimode fibre?
It is designed for multimode fibre and operates at 850 nm. A single-mode fibre requirement normally calls for a different optical module selected for the required distance and platform.
What connector is required?
The module uses a dual LC connection. The fibre pair must have the correct connector type and polarity so that transmit on one endpoint reaches receive on the other.
Will it work in non-MikroTik equipment?
MikroTik states that the units are compatible with non-MikroTik SFP devices. However, third-party host acceptance, firmware behaviour and vendor support policies vary, so the exact device should be checked before purchase.
Are fibre patch cords included?
Patch cords should not be assumed to be included. Confirm current package contents and add appropriate dual LC multimode patch leads of the correct grade and length to the quotation when required.
What information is needed for a quotation?
Provide the exact endpoint devices, quantity, fibre type, route length, connector format, delivery location and whether installation, configuration or testing support is required.
How should the link be tested after installation?
Verify module recognition, link state, negotiated speed, optical diagnostics where available, interface errors and real traffic. Important routes should also have fibre test results and documented patching details.
How can I check UAE availability?
Contact FourTeck with the required quantity and delivery destination. Current availability and lead time can then be checked against the exact request without assuming stock or a fixed delivery schedule.
Plan the complete 10G fibre link
Share both endpoint models, fibre distance, cable type and module quantity. FourTeck can review the requirement, identify any missing patching or service items, and prepare a commercial quotation with current UAE availability guidance.
