Cisco 1 Port ATM Enhanced E3 Port Adapter The enhanced asynchronous transfer mode port adapters ATM PA-A3 are single port, single/dual wide ATM port adapters for the Cisco 7200/7500/7600 OSR series routers using the FlexWAN module for the Catalyst 6000 family of switches. The ATM PA-A3 is designed with a high performance, dual segmentation and reassembly architecture with local buffer memory. The ATM PA-A3 supports advanced ATM hardware features such as per virtual circuit and per virtual path traffic shaping, as well as support for most ATM service classes such as non real time Variable Bit Rate, Available Bit Rate and Unspecified Bit Rate, and support of 4096 ATM VCs. This adapter is supported on VIP2-40 and VIP2-50 versatile interface processors Picture (if present) is for visual purposes only and might not reflect the actual product you receive. Cisco Factory Refurbished/Recertified w/1 year Cisco Warranty. Minimum 3-7 day lead time to ship. Please call for shipping quote and for price and availability before buying, as they can change at any time.