Description
The Allied Telesis x550-18XSQ is a high-performance, stackable Layer 3 switch designed to meet the demands of modern enterprise networks and data centers. Featuring 16 x 10 Gigabit SFP+ slots and 2 x 40 Gigabit QSFP uplinks, this modular switch delivers resilient and scalable connectivity with Vista Manager™ EX and AMF for intelligent automation and simplified management.
Built for reliability, the x550-18XSQ supports VCStack™ and EPSRing™ technologies for fault-tolerant network design and high-speed recovery. With a power-efficient 111W draw, a rack-mountable chassis, and full TAA compliance, it’s the perfect choice for secure, high-availability deployments in government and enterprise networks.
| Category | Specification |
|---|---|
| Product Model | AT-x550-18XSQ |
| Manufacturer Part Number | ATX55018XSQ90 |
| Product Type | Layer 3 Stackable Managed Switch |
| Form Factor | Rack-mountable (1U) |
| Ports | 16 x 10G SFP+, 2 x 40G QSFP |
| Expansion Slots | 18 total expansion slots |
| Stacking Support | Yes (VCStack™) |
| Modular | Yes |
| Media Type Supported | Optical Fiber |
| Ethernet Standards | 10GBase-X, 40GBase-X |
| Network Standards | IEEE 802.1x, 802.3ad, 802.3az, 802.3ba, 802.1Q, and more |
| Layer Support | Layer 3 |
| Management | Vista Manager™ EX, AMF, Web GUI, SNMP |
| Power Supply | 1 installed |
| Power Consumption | 111 Watts |
| Color | Gray |
| Dimensions (H x W x D) | 1.7" x 8.3" x 13.6" |
| Weight | Approx. 7.05 lbs |
| Mounting Options | Rack-mountable (brackets included) |
| Compliancy | TAA Compliant, RoHS |
| Included Accessories | 19-inch Rack Mount Brackets |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
