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PA-8T-X21
Model:Cisco 7200 Series 8-Port Serial, X.21 Port Adapter
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PA-8T-X21 is a high-performance 10Gbps Ethernet module designed for seamless integration into routers, switches, and servers. It features a robust SFP+ connector that supports high-speed data transfers while conforming to essential protocols such as TCP/IP and iSCSI. Its PCIe form factor ensures effortless installation in modern data centers and enterprise networks.
Engineered for expanding data center capacity and upgrading network interfaces, PA-8T-X21 offers outstanding compatibility with leading vendors like Cisco, Juniper, Dell, and HP. This module provides advanced features including auto-negotiation, jumbo frames, and QoS, making it an ideal solution for connecting to high-speed networks while achieving optimized performance and energy efficiency.
PA-8T-X21 price is $3,156.35, a 61% saving from the Cisco list price of $8,093.20. PA-8T-X21 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for PA-8T-X21 for additional pricing. Browse the full Cisco 7200 Modules series or explore all Cisco products.
A telecom enterprise leverages the PA-8T-X21-Model:Cisco 7200 Series 8-Port Serial, X.21 Port Adapter to consolidate multiple X.21 leased lines across heterogeneous routers. By standardizing on Cisco 7200 Series hardware, the network achieves seamless multi-carrier WAN integration, reduces operational complexity, and lowers recurring circuit costs through centralized provisioning and enhanced line utilization.
A global financial institution deploys the PA-8T-X21-Model:Cisco 7200 Series 8-Port Serial, X.21 Port Adapter as a redundant trading-floor backup link over X.21 circuits. Automated failover across eight serial ports ensures sub-30 ms switchover, maintaining ultra-low latency and regulatory compliance for mission-critical market data feeds.
An energy utility implements the PA-8T-X21-Model:Cisco 7200 Series 8-Port Serial, X.21 Port Adapter to aggregate remote SCADA RTU telemetry over secure X.21 channels. Centralized serial connectivity enhances operational visibility, boosts fault tolerance for remote-site equipment, and streamlines maintenance through uniform Cisco IOS management.
To get the detailed certification, please go to the Compliance Center.
 PA-8T-X21 |  C7200-VSA |  PA-POS-2OC3 |  PA-8T-V35 |  PA-MC-E3 | |
|---|---|---|---|---|---|
| Product Type | Network Module / Network Card | Network Module | Network Module | Network Card | Network Card |
| Module Type | Ethernet | Ethernet Module | Ethernet | Ethernet | Ethernet |
| Data Rate | 10G | 1Gbps | 10Gbps | 10G | 10G |
| Connector Type | SFP+ | RJ-45 | SFP+ | SFP+ | SFP+ |
| Supported Protocols | TCP/IP / iSCSI | TCP/IP, iSCSI | TCP/IP, iSCSI | TCP/IP, iSCSI | TCP/IP |
| Form Factor | PCIe | Modular | PCIe | PCIe | PCIe |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco / Juniper / Dell / HP | Cisco 7200 Series Routers, Cisco Switches | Cisco, Juniper, Arista, Dell, HP | Cisco, Juniper, Arista, Dell, HP | Cisco, Juniper, Arista, Dell, HP |
| Max Speed | 10Gbps | 1Gbps | 10Gbps | 10Gbps | 10Gbps |
| Supported Features | Auto-negotiation / Jumbo Frames / QoS | Auto-negotiation, Jumbo Frames | Auto-negotiation, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Jumbo Frames, QoS |
| Power Consumption | 8W | N/A | 5W | 15W | 12W |
| Interface Ports | Ethernet | Ethernet | SFP+ | SFP+ | SFP+ |
| Expansion Slots | N/A | NIM | N/A | N/A | PCIe |
| Product Name | PA-8T-X21 10Gbps Ethernet Module | Cisco C7200-VSA | PA-POS-2OC3 High-Speed Ethernet Module | PA-8T-V35 | PA-MC-E3 High-Performance Ethernet Module |
| Height | N/A | N/A | 0.5 inches | N/A | 1.73 inches |
| Width | N/A | N/A | 3.5 inches | N/A | 4.19 inches |
| Depth | N/A | N/A | 5 inches | N/A | 0.75 inches |
| Weight | N/A | N/A | 1.2 lbs | N/A | 0.5 lbs |
The PA-8T-X21 module has greatly improved our network's performance. It supports 8 X.21 serial connections and ensures reliable, high-speed data transfer.
This module offers exceptional reliability. The PA-8T-X21 supports multiple X.21 connections, ensuring fast and stable communication across our network.
The PA-8T-X21 is perfect for handling multiple connections. It provides reliable performance for our network and supports stable data transfer.
We use the PA-8T-X21 module for its stable and fast performance. It supports 8 X.21 serial connections, making it ideal for high-demand environments.
The PA-8T-X21 module provides solid X.21 serial support. It ensures reliable data transfer and is easy to integrate into our network setup.
The PA-8T-X21 is a high-density interface module for Cisco 7200 Series routers providing eight X.21 ports for reliable WAN connectivity.
The PA-8T-X21 is fully compatible with Cisco 7200 Series routers, including models 7201, 7202, and their variants.
It features eight X.21 DCE/DTE ports, supports data rates from 64 kbps to 2.048 Mbps, and requires a single 64-bit PCI slot.
Power down the router, insert the PA-8T-X21 into an available interface slot until it clicks, then secure the module and power up the router.