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Flexible combo board that fits mixed copper and fiber needs perfectly.
DES-85-12GE-TX/SFP
D-Link 12-port Gigabit Combo service board (RJ45, SFP)
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DES-85-12GE-TX/SFP
D-Link 12-port Gigabit Combo service board (RJ45, SFP)
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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.
DES-85-12GE-TX/SFP price is is available on request. Get immediate quote.
Request bulk order quote for DES-85-12GE-TX/SFP for additional pricing. Browse the full D-Link Core Switches series or explore all D-Link products.
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.
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.
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.
To get the detailed certification, please go to the Compliance Center.
 DES-85-12GE-TX/SFP |  DES-8503 |  DES-85-4TE-SFP+-MPLS-L |  DES-85-24GE-SFP |  DES-85-24GE-TX | |
|---|---|---|---|---|---|
| Depth | 12 inches | 12 inches | 12 inches | 11 inches | 11 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 256 MB | 64 MB | 32 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 |
| IOS | LAN Base | LAN Base | IP Services | LAN Base | LAN Lite |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 | Layer 2 / Layer 3 | Layer 3 | Layer 2 | Layer 2 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | DES-85-12GE-TX/SFP | DES-8503 | DES-85-4TE-SFP+-MPLS-L | DES-85-24GE-SFP | DES-85-24GE-TX |
| Media Type Supported | Combo | Twisted Pair | Combo | Fiber | Twisted Pair |
| Memory | 256 MB | 512 MB | 256 MB | 128 MB | 128 MB |
| Number of Downlink Ports | N/A | 48 Ports | N/A | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 12–24 Ports | 24–48 Ports | Under 12 Ports | 12–24 Ports | 12–24 Ports |
| POE Support | Non POE | POE+ | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 12 Combo Ports | 2 expansion slots available | 4 Ethernet ports and 4 SFP+ uplink ports | N/A | 24 10/100/1000 TX ports, 4 SFP ports |
| Power Consumption | 35 W | 75W | 50W | 33 W | 35 W |
| Power Source | Redundant Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | DES-85-12GE-TX/SFP Managed Ethernet Switch | DES-8503 Enterprise Switch | DES-85-4TE-SFP+-MPLS-L | DES-85-24GE-SFP Gigabit Ethernet Switch | DES-85-24GE-TX Ethernet Managed Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | Yes | No | No | No |
| SFP Ports | Combo | 4 SFP Ports | 4 SFP Ports | 24 SFP Ports | 4 SFP Ports |
| Switching Capacity | 24 Gbps | 640 Gbps | 64 Gbps | 48 Gbps | 48 Gbps |
| Switching Capacity with Stacking | 48 Gbps | 1,280 Gbps | 128 Gbps | 96 Gbps | 96 Gbps |
| Uplink Configuration | 1G | 10G | 10G | 1G | 1G |
| Weight | 10 lbs | 15 lbs | 7 lbs | 15 lbs | 10 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches |
Flexible combo board that fits mixed copper and fiber needs perfectly.
Installation was smooth and ports perform reliably.
Good balance of flexibility and stability.
Useful expansion board for hybrid networks.
Consistent performance since deployment.
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.
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.
Each port on the DES-85-12GE-TX/SFP supports auto-negotiation at 10 Mbps, 100 Mbps, or 1000 Mbps to match connected devices.
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.