Enterasys A2H254-16 P0973BK | SecureStack A2 16-Port Ethernet Switch
8×100BASE-TX + 8×100BASE-FX + 2×SFP Uplinks for Industrial Automation, DCS/PLC Integration, and Enterprise SecureStack Deployments
1. Product Overview
The Enterasys A2H254-16 P0973BK is a 16-port managed Ethernet switch from the SecureStack A2 series, optimized for industrial automation and enterprise network deployments requiring mixed copper/fiber connectivity, high availability, and centralized management. It features 8×100BASE-TX RJ45 copper ports, 8×100BASE-FX multi-mode MT-RJ fiber ports, and 2×SFP uplink slots for 1000BASE-T/1000BASE-SX/LX connectivity, delivering a 48Gbps switching capacity and 35.7Mpps forwarding rate for low-latency data exchange in DCS, PLC, and SCADA systems. The switch supports SecureStack stacking (up to 8 units), VLAN (4K), QoS (802.1p), link aggregation (LACP), and ACL security, with redundant power options and fanless design for harsh industrial sites. With a 100-240V AC power supply, operating temperature range of 0°C to +40°C, and compliance with IEEE 802.3, 802.1Q, and UL 508 standards, it ensures reliable performance in industrial control networks, manufacturing floors, data centers, and enterprise access layers, serving as a scalable, secure, and easy-to-manage solution for seamless integration with Foxboro DCS and third-party automation equipment.

Key Specifications
• Model: A2H254-16 P0973BK | SecureStack A2 16-Port Managed Ethernet Switch
• Port Configuration: 8×100BASE-TX (RJ45, 10/100 Mbps); 8×100BASE-FX (MT-RJ, multi-mode fiber); 2×SFP (Mini-GBIC) uplink slots (1000BASE-T/SX/LX compatible)
• Performance: Switching Capacity: 48Gbps; Forwarding Rate: 35.7Mpps; MAC Address Table: 8K; Jumbo Frame Support (up to 9KB)
• Stacking: SecureStack A2 Stackable (up to 8 units, 140.8Gbps backplane)
• Management: Web GUI, CLI (SSH/Telnet), SNMP v1/v2c/v3; RMON for traffic monitoring
• Features: VLAN (4K, 802.1Q); QoS (802.1p, DSCP); LACP (802.3ad); ACLs; Port Security; Auto-sensing (speed/duplex)
• Power Supply: AC 100-240V ±10%, 50/60Hz; Redundant power input support; Typical power consumption: 18W
• Environmental: Operating Temperature: 0°C to +40°C (+32°F to +104°F); Storage: -40°C to +85°C (-40°F to +185°F); Humidity: 10% to 90% (Non-condensing)
• Dimensions: 44mm × 210mm × 300mm (1.7" × 8.3" × 11.8"); Net Weight: 1.08 kg
• Certifications: CE, UL 508, IEEE 802.3/802.3u/802.1Q/802.1p, RoHS
2. Core Features
• Mixed Copper/Fiber Connectivity: 8×RJ45 + 8×MT-RJ ports for flexible industrial I/O/controller connections; 2×SFP uplinks for long-distance/ high-speed backbone integration.
• SecureStack Stacking: Up to 8 units in a single stack for centralized management and 140.8Gbps backplane scalability.
• Enterprise-Grade Security: ACLs, port security, and SNMP v3 for protection against unauthorized access and data breaches.
• QoS for Critical Traffic: Prioritizes DCS/PLC/SCADA data with 802.1p and DSCP marking, ensuring real-time control performance.
• Redundant Power: Dual power inputs for fault tolerance in industrial control networks.
• Fanless Design: No moving parts for reduced maintenance and improved reliability in harsh environments.
• Auto-Sensing Ports: Automatically detects speed/duplex settings for plug-and-play device integration.
• Comprehensive Management: Web GUI/CLI/SNMP for easy configuration; RMON for proactive traffic monitoring and troubleshooting.

YMGK Purchase Information
This section covers key details customers care about regarding purchasing, to support your global industrial product procurement needs.
One-Stop Global Industrial Product Procurement
Sales Manager: KI MI
WeChat: 18059884790
Global Inventory: 121 shared inventories worldwide, enabling direct procurement
from overseas warehouses for faster delivery.
- Pricing & After-Sales: Competitive prices plus reliable after-sales warranty services.
Customer Coverage: Serving clients across United States, Germany, Japan, South Korea,
United Kingdom, France, Italy, Canada, Brazil, India, Australia, Russia, Spain, Netherlands,
Switzerland, Sweden, Belgium, Austria, and Turkey.
Product Quality: All items are brand new and original. Spare parts include a 1-year warranty,
and all products are tested and certified.
Discounts: Contact us for bulk-order discounts. We also offer further price adjustments
if you receive lower quotes for identical products from other suppliers.
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3. Typical Applications
• Industrial Automation: DCS/PLC network integration (Foxboro I/A Series, Invensys); Robot cell connectivity; SCADA-to-field device data routing.
• Oil & Gas: Offshore platform control networks; Pipeline monitoring systems; Fiber-optic backhaul for remote wellheads.
• Manufacturing: Factory floor access layer switching; Machine-to-machine (M2M) communication; Quality control system integration.
• Data Centers: Server farm access; Storage area network (SAN) connectivity; Redundant uplink aggregation.
• Enterprise Networks: Campus LAN access; Remote office connectivity; SecureStack backbone extension for multi-building deployments.
4. Installation & Maintenance
Installation: 1U rack-mount; Connect power (redundant recommended); Wire copper/fiber ports to devices; Insert SFP modules for uplinks; Stack (if needed) with SecureStack cables.
Configuration: Access via Web GUI/CLI; Set IP address; Configure VLANs/QoS/ACLs; Enable stacking (if used); Set up port security and SNMP.
Maintenance: Weekly: Check status LEDs (Power, Stack, Link/Activity, Fault). Monthly: Inspect power connections and SFP modules; Verify stack synchronization. Annual: Update firmware; Clean dust filters; Test redundant power switchover.
Fault Diagnosis: No uplink: Check SFP module compatibility and fiber polarity. Stack issues: Verify stack cables and master/slave configuration. Port errors: Check cable quality and auto-sensing settings; Use RMON to identify traffic anomalies.
Technical Document | Enterasys A2H254-16 P0973BK | SecureStack A2 16-Port Managed Ethernet Switch for Industrial & Enterprise Networks