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Allied Telesis AT-SBX81XLEM/Q2 Expansion Module - 40GbE QSFP+ Optical Fiber - 2-Port
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Product Features
Technical Overview
This expansion module operates on the 40GBase-X standard, delivering a full-duplex 40 Gbps data rate per port. It utilizes QSFP+ (Quad Small Form-factor Pluggable Plus) transceiver slots, which support hot-pluggable optical transceivers for flexible media selection and easy maintenance. The module is explicitly designed for optical fiber cabling, accommodating both single-mode and multi-mode fiber optics based on the installed QSFP+ transceiver.
Each of the two QSFP+ ports can be configured independently, providing granular control over link aggregation, failover, and traffic management. The module draws power and management signaling directly from the host line card, requiring no external power supply. It supports standard digital diagnostics monitoring (DDM) functions when used with compatible transceivers, allowing for real-time monitoring of optical power, temperature, and voltage.
Key Product Advantages
The AT-SBX81XLEM/Q2 expansion module delivers tangible performance and operational benefits for network infrastructure scaling. Its dual QSFP+ design doubles the high-speed port availability on compatible switches, enabling more efficient uplink distribution and reducing oversubscription in core and distribution layers.
Bandwidth Scalability
Add up to 80 Gbps of additional switching capacity with two independent 40GbE ports, supporting growing data demands and future-proofing network investments.
- Incremental port expansion
- Preserves existing switch investment
- Reduces chassis footprint requirements
Operational Flexibility
Hot-pluggable QSFP+ slots allow transceiver changes without powering down the switch, minimizing network downtime during upgrades or repairs.
- Live insertion and removal
- Transceiver-agnostic design
- Simplifies sparing and maintenance
Deployment / Use Cases
This expansion module is ideal for environments where existing Allied Telesis switches require additional high-speed optical interfaces. Common deployment scenarios include data center spine-leaf architectures, where multiple 40GbE links are needed for east-west traffic between leaf switches, or as high-bandwidth uplinks from access-layer switches to distribution/core layers.
In enterprise campus networks, the module can be used to create resilient fiber backbones between buildings or floors, leveraging optical fiber's immunity to electromagnetic interference and longer reach compared to copper. It also serves well in storage area networks (SAN) and high-performance computing (HPC) clusters, where low-latency, high-throughput interconnects are critical for data replication and parallel processing tasks.
Highlights
- Adds two 40GbE QSFP+ optical fiber ports to compatible Allied Telesis switches
- Supports 40GBase-X technology for 40 Gbps full-duplex data transfer
- Hot-pluggable QSFP+ slots enable flexible transceiver selection and easy maintenance
- Designed for optical fiber media, compatible with single-mode and multi-mode transceivers
- Compatible exclusively with the Allied Telesis AT-SBx81XLEM line card series
- Supports digital diagnostics monitoring (DDM) with compatible transceivers
- RoHS, WEEE, and REACH compliant for environmentally responsible deployment
- Manufactured in Indonesia with Allied Telesis quality assurance
Specifications
| Specifications | |
|---|---|
| Manufacturer | Allied Telesis, Inc |
| Manufacturer Part Number | AT-SBX81XLEM/Q2 |
| Brand Name | Allied Telesis |
| Product Model | AT-SBX81XLEM/Q2 |
| Product Name | AT-SBX81XLEM/Q2 Expansion Module |
| Product Type | Expansion Module |
| Technical Information | |
| Application/Usage | Optical Network,Data Networking |
| Media & Performance | |
| Media Type Supported | Optical Fiber |
| Ethernet Technology | 40 Gigabit Ethernet |
| Network Technology | 40GBase-X |
| I/O Expansions | |
| Total Number of Expansion Slots | 2 |
| Expansion Slot Type | QSFP+ |
| Miscellaneous | |
| Compatibility | Allied Telesis AT-SBx81XLEM Line Card |
| Country of Origin | Indonesia |
| Environmentally Friendly | Yes |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS),Waste Electrical and Electronic Equipment Directive (WEEE),Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) |
FAQ
What type of expansion module is the AT-SBX81XLEM/Q2?
The AT-SBX81XLEM/Q2 is a QSFP+ expansion module that adds two 40 Gigabit Ethernet optical fiber ports to compatible Allied Telesis switches. It uses the 40GBase-X standard and is designed specifically for integration with the AT-SBx81XLEM line card series to extend high-speed connectivity options.
What is the maximum data transfer rate per port?
Each QSFP+ port on this expansion module supports a full-duplex data transfer rate of 40 gigabits per second (Gbps) when used with compatible 40GBase-X optical transceivers. This provides up to 80 Gbps of aggregate bandwidth across both ports for high-performance networking applications.
Is this module compatible with all Allied Telesis switches?
No, this expansion module is specifically designed for the Allied Telesis AT-SBx81XLEM line card. It is not a universal module and will not function with other switch models or line cards. Always verify compatibility with your existing hardware before installation.
| Qty | Price | Available |
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