Vendor refurbished Cisco NM-2E2W for 3600 series routers (note these do not work in Cisco 2600 series). Both WIC slots have their filler panels (WIC-BLANK-PANEL) intact. These modules are guaranteed to be Cisco brand and eligible for SmartNET, not a counterfeit. Why is this important? Cisco will not honor any warranty coverage on counterfeit parts. They may look similar and function, but they are not quality controlled by Cisco, and "your mileage may vary" as the saying goes.