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DES-85-12GE-TX/SFP
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- D-Link 12-port Gigabit Combo service board (RJ45, SFP)
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DES-85-12GE-TX/SFP Overview
DES-85-12GE-TX/SFP is a high-performance Layer 2 managed Ethernet switch built on a robust, modular architecture that enables seamless stacking and scalability for growing network demands. Designed for enterprise and data center applications, it combines versatile copper and SFP-based connectivity with advanced power options, including a redundant power supply, to deliver reliable operation and optimal performance in critical environments.
Engineered with 12 combo Ethernet ports supporting 10/100/1000 speeds, the switch offers enhanced performance, efficient traffic management, and flexibility in uplink configurations. Ideal for campus LANs, branch offices, and high-density deployments, the DES-85-12GE-TX/SFP provides the scalability, power efficiency, and seamless integration necessary to support evolving network infrastructures.
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DES-85-12GE-TX/SFP Specifications
| Product Type | Switch |
| Power Source | Redundant Power Supply |
| Layer Supported | Layer 2 |
| Form Factor | Rack-mount |
| Power Consumption | 35 W |
| Number Of Ethernet Ports | 12–24 Ports |
| Number Of Downlink Ports | N/A |
| Manageable | Managed |
| Ethernet Technology | 10/100/1000 |
| Media Type Supported | Combo |
| Redundant Power Supply Supported | Yes |
| Manufacturer Part Number | DES-85-12GE-TX/SFP |
| Uplink Configuration | 1G |
| IOS | LAN Base |
| POE Support | Non POE |
| SFP Ports | Combo |
| Memory | 256 MB |
| Rack Units | 1 RU |
| Interface Ports | 10/100/1000 |
| Port/Expansion Slot Details | 12 Combo Ports |
| Flash Memory | 64 MB |
| Switching Capacity | 24 Gbps |
| Switching Capacity With Stacking | 48 Gbps |
| Product Name | DES-85-12GE-TX/SFP Managed Ethernet Switch |
| Height | 1.75 inches |
| Width | 17.5 inches |
| Depth | 12 inches |
| Weight | 10 lbs |
DES-85-12GE-TX/SFP Use Case
Data Center Uplink Expansion with Hybrid Connectivity
In a mid-sized data center, network engineers install the DES-85-12GE-TX/SFP service board into a top-of-rack switch chassis to aggregate 8 RJ45 1 GbE server ports and 4 SFP 10 GbE uplinks. By leveraging the combo ports, IT teams achieve hot-swappable fiber uplinks for high-bandwidth server virtualization clusters while retaining copper interfaces for legacy servers. Outcome: seamless scalability to 40 Gbps aggregate throughput, reduced service interruptions, and optimized port utilization for future-proof network growth.
Campus Network Backbone Aggregation
A university IT department deploys the DES-85-12GE-TX/SFP to consolidate multiple departmental switches over a fiber ring. The board’s 12-port Gigabit combo design enables simultaneous copper drop-outs to labs and 10 GbE SFP uplinks to the core router. Outcome: simplified topology with resilient fiber spans, 99.99% uptime across academic buildings, and streamlined management through a unified switch chassis.
Industrial Automation Network Resilience
In a manufacturing plant’s control room, the DES-85-12GE-TX/SFP is mounted in an industrial-grade switch to connect PLCs and HMI workstations via RJ45 while using SFP links to bridge remote production cells. This hybrid deployment ensures electromagnetic immunity on fiber lines and straightforward copper cabling for on-site devices. Outcome: deterministic low-latency communication, minimized downtime in harsh conditions, and compliance with Industry 4.0 reliability standards.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Depth | 12 inches | 11 inches | 11 inches | 12 inches | 12 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 32 MB | 64 MB | 64 MB | 64 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.75 inches | 1.75 inches | 1.75 inches | 1.75 inches |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| IOS | LAN Base | LAN Base | LAN Lite | LAN Base | IP Services |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 | Layer 2 | Layer 2 | Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | DES-8503 | DES-85-24GE-SFP | DES-85-24GE-TX | DES-85-12GE-TX/SFP | DES-85-4TE-SFP+-MPLS-L |
| Media Type Supported | Twisted Pair | Fiber | Twisted Pair | Combo | Combo |
| Memory | 512 MB | 128 MB | 128 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 48 Ports | 24 Ports | 24 Ports | N/A | N/A |
| Number of Ethernet Ports | 24–48 Ports | 12–24 Ports | 12–24 Ports | 12–24 Ports | Under 12 Ports |
| POE Support | POE+ | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 2 expansion slots available | N/A | 24 10/100/1000 TX ports, 4 SFP ports | 12 Combo Ports | 4 Ethernet ports and 4 SFP+ uplink ports |
| Power Consumption | 75W | 33 W | 35 W | 35 W | 50W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | Redundant Power Supply | AC Power Supply |
| Product Name | DES-8503 Enterprise Switch | DES-85-24GE-SFP Gigabit Ethernet Switch | DES-85-24GE-TX Ethernet Managed Switch | DES-85-12GE-TX/SFP Managed Ethernet Switch | DES-85-4TE-SFP+-MPLS-L |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | No | No | Yes | No |
| SFP Ports | 4 SFP Ports | 24 SFP Ports | 4 SFP Ports | Combo | 4 SFP Ports |
| Switching Capacity | 640 Gbps | 48 Gbps | 48 Gbps | 24 Gbps | 64 Gbps |
| Switching Capacity with Stacking | 1,280 Gbps | 96 Gbps | 96 Gbps | 48 Gbps | 128 Gbps |
| Uplink Configuration | 10G | 1G | 1G | 1G | 10G |
| Weight | 15 lbs | 15 lbs | 10 lbs | 10 lbs | 7 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches |
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Questions & Answers
Q
What is the D-Link DES-85-12GE-TX/SFP service board?
A
The DES-85-12GE-TX/SFP is a D-Link 12-port Gigabit Combo service board featuring RJ-45 and SFP interfaces for high-performance network expansion.
Q
How many RJ-45 and SFP ports does the DES-85-12GE-TX/SFP offer?
A
The DES-85-12GE-TX/SFP provides 12 combo ports, each supporting either a 10/100/1000 Mbps RJ-45 connection or a Gigabit SFP module.
Q
What data transfer speeds are supported by the DES-85-12GE-TX/SFP?
A
Each port on the DES-85-12GE-TX/SFP supports auto-negotiation at 10 Mbps, 100 Mbps, or 1000 Mbps to match connected devices.
Q
Which SFP modules are compatible with the DES-85-12GE-TX/SFP?
A
The DES-85-12GE-TX/SFP is compatible with standard 1 Gbps SFP modules, including D-Link’s DEM-310GT and any 1000BASE-SX/LX compliant transceivers.
Q
Which D-Link chassis models support the DES-85-12GE-TX/SFP service board?
A
The DES-85-12GE-TX/SFP is designed for D-Link DES-8000 series chassis and select DGS-8000 series chassis with expansion slots.
Q
Is the DES-85-12GE-TX/SFP hot-swappable?
A
Yes, the DES-85-12GE-TX/SFP supports hot-swapping, allowing installation or removal without powering down the chassis.
Q
How do I install the DES-85-12GE-TX/SFP in a chassis?
A
Slide the DES-85-12GE-TX/SFP module into an available expansion slot until it clicks, then secure it with the chassis locking mechanism.
Q
Does the DES-85-12GE-TX/SFP support auto-negotiation and auto-MDI/MDIX?
A
Yes, all 12 ports on the DES-85-12GE-TX/SFP support auto-negotiation and auto-MDI/MDIX for plug-and-play connectivity.
Q
What is the power consumption of the DES-85-12GE-TX/SFP?
A
The DES-85-12GE-TX/SFP draws up to 10 W of power under full load, as specified in the product datasheet.
Q
What are the operating temperature and humidity ranges for the DES-85-12GE-TX/SFP?
A
The DES-85-12GE-TX/SFP operates reliably from 0 °C to 50 °C with 10%–90% non-condensing relative humidity.
Q
What certifications and safety standards does the DES-85-12GE-TX/SFP meet?
A
The DES-85-12GE-TX/SFP is CE, FCC, RoHS, and UL certified, ensuring compliance with international safety and environmental standards.
Q
Does the DES-85-12GE-TX/SFP support network management features?
A
Network management is provided by the host chassis; the DES-85-12GE-TX/SFP integrates seamlessly with D-Link’s Web GUI, CLI, and SNMP tools.
Q
Can I use the DES-85-12GE-TX/SFP for uplink and stacking?
A
Yes, you can deploy SFP ports on the DES-85-12GE-TX/SFP for uplink or stacking links at 1 Gbps to other switches or chassis.
Q
What warranty does D-Link provide for the DES-85-12GE-TX/SFP?
A
D-Link offers a limited lifetime warranty for the DES-85-12GE-TX/SFP when installed in a qualifying D-Link chassis.
Q
Where can I purchase genuine DES-85-12GE-TX/SFP service boards?
A
Genuine DES-85-12GE-TX/SFP modules are available through authorized D-Link distributors and the official D-Link online store.
Q
Are there best practices for maximizing performance of the DES-85-12GE-TX/SFP?
A
To maximize performance, use matched SFP modules, maintain proper airflow in the chassis, and keep firmware updated via D-Link’s support portal.
