Get free delivery within Nairobi CBD for orders above KES 20,000
D-Link DEM-QX10Q-LR4 40GBASE-LR4 QSFP+Transceiver 10 km
Original price was: KSh 25,862.07.KSh 23,275.86Current price is: KSh 23,275.86. ex VAT
Out of stock
| Form Factor | QSFP+ |
| Data Rate | 40 Gbps |
| Wavelength | 850 nm |
| Fiber Type | Multi-Mode (OM3/OM4) |
| Connector | MPO (12-Fiber Female) |
| Distance | 100 m (OM3), 150 m (OM4) |
| Channels | 4 Tx / 4 Rx |
| Power Supply | 3.3 V |
| DDM Support | Yes |
| Hot-Swappable | Yes |
| Compliance | IEEE 802.3ba, MSA, RoHS |
Out of stock
Shipping & Delivery
Fast delivery
Your order will be deliver to the specified address
15 - 45 minutes
From KES 300

Warranty 1 year
Free 30-Day returns
Description
D-Link DEM-QX10Q-LR4 40GBASE-LR4 QSFP+Transceiver 10 km
The D-Link QSFP Multi Transceiver is a high-performance 40GBASE-LR4 QSFP+ optical transceiver designed for long-distance, high-bandwidth connections across enterprise and data center networks. Operating over single-mode fiber (SMF), it supports data transmission up to 10 kilometers, providing a robust solution for core and aggregation layer deployments requiring exceptional throughput and reliability.
Utilizing four independent transmit and receive channels, each operating at 10.3125 Gbps, the module achieves a combined data rate of 40 Gbps full-duplex, enabling seamless backbone scalability. Built to comply with IEEE 802.3ba 40GBASE-LR4 standards and MSA (Multi-Source Agreement), the DEM-QX10Q-LR4 ensures multi-vendor interoperability, superior optical performance, and consistent quality. It also features Digital Diagnostics Monitoring (DDM) for real-time analysis of optical parameters—ensuring early detection of potential link issues.
Key Features
40G Ethernet Connectivity
Delivers ultra-fast 40-Gigabit Ethernet performance for high-capacity data centers and enterprise networks.Quad Small Form-Factor Pluggable Plus (QSFP+) Design
Integrates four transmit and four receive channels for aggregated 40G throughput.Long-Reach Optical Transmission
Supports single-mode fiber links up to 10 km, ideal for metro, campus, and inter-building connections.Digital Diagnostics Monitoring (DDM)
Provides real-time monitoring of temperature, voltage, TX/RX power, and laser bias current for proactive network maintenance.Hot-Swappable Operation
Enables insertion and removal without system shutdown, minimizing downtime and enhancing serviceability.Industry Standard Compliance
Fully compliant with IEEE 802.3ba, MSA, and RoHS standards for performance, interoperability, and environmental safety.
Specifications
| Feature | Specification |
|---|---|
| Model | D-Link DEM-QX10Q-LR4 |
| Form Factor | QSFP+ |
| Transceiver Type | 40GBASE-LR4 |
| Data Rate | 40 Gbps (4 × 10.3125 Gbps channels) |
| Wavelengths | 1271 nm, 1291 nm, 1311 nm, 1331 nm |
| Fiber Type | Single-Mode (9/125 μm) |
| Connector Type | Duplex LC |
| Transmission Distance | Up to 10 km |
| Standards Compliance | IEEE 802.3ba 40GBASE-LR4, MSA |
| Digital Diagnostics (DDM) | Supported |
| Power Supply Voltage | 3.3 V |
| Hot-Pluggable | Yes |
| Operation Mode | Full-duplex |
| Operating Temperature | 0 °C to 70 °C |
| Storage Temperature | -40 °C to 85 °C |
| Compliance | RoHS, CE, FCC |
| Compatibility | D-Link switches and all MSA-compliant QSFP+ ports |
What’s in the Box
1 × D-Link DEM-QX10Q-LR4 40GBASE-LR4 QSFP+ Transceiver
Quick Installation / Safety Guide
Why Choose D-Link QSFP Multi Transceiver
Scalable 40G performance ideal for high-density data centers.
10 km single-mode fiber reach for long-haul and backbone links.
Real-time DDM monitoring ensures reliable optical performance.
Fully compliant with IEEE and MSA standards for broad interoperability.
Hot-swappable, low-power design enhances network flexibility and uptime.
Customer Reviews
4 reviews for D-Link DEM-QX10Q-LR4 40GBASE-LR4 QSFP+Transceiver 10 km
Clear filtersYou may also like
Ubiquiti UACC-OM-SM-1G-S-2 1G Bidirection SingleMode Module
Price range: KSh 6,500.00 through KSh 120,000.00 ex VAT
Ubiquiti UACC-OM-MM-1G-D 1G Multi-Mode Optical Module
Price range: KSh 3,500.00 through KSh 60,000.00 ex VAT






























Akinyi O. (verified owner) –
This D-Link QSFP+ transceiver has been a game-changer for our data centre operations in Upper Hill. The 10 km reach is exactly what we needed, and the 40GBASE-LR4 performance is consistently reliable. Installation was straightforward, and it integrated seamlessly with our existing infrastructure. Quite impressed with the build quality and overall stability. Definately a solid investment for critical network links.
Nafula S. (verified owner) –
Works flawlessly. Significantly improved our network speed.
David Kariuki (verified owner) –
Good performance from this 40GBASE-LR4 module. The 10 km range is as advertised. Delivery to our Westlands branch was surprisingly quick. It’s ni pricey, but teh reliability for our core network links makes it a worthwhile investment. Just wish it came with more detailed documentation.
Lucy Muthoni (verified owner) –
Exceeded expectations for our Nairobi office. D-Link transceiver provides stable, high-speed connectivity. Def recommend it for anyone needing robust long-distance fibre.