WAN modules allow you to customize a standard port to your specific communication needs, giving you flexibility in how you network your system. The Cisco HWIC??16A High??Speed WAN Interface Card (HWIC) is an Asynchronous EIA??232 (RS??232) module designed for Cisco 2800, 2900, 3800, and 3900 Series Integrated Service Routers (ISRs). It provides up to 16 230.4 kb/s?Serial ports over two?(2) high-density DB??25 connections. This Cisco HWIC??16A WAN Card has been tested for complete functionality by our expert in-house Cisco-Certified Technician and is ready to ship today! Purchase with confidence, as the photos above represent the exact quality of your items, and come bundled with our 90 Day Warranty. *Please note, we have additional refurbished Cisco Router Components in stock; feel free to send a message and we will update the quantity to suit your specific needs.* Thank you for choosing AltaTech for all of your lightning-fast IT needs!