The Cisco LightStream 1010 is a 5 Gbps modular switch designed for use in either the workgroup or the campus, depending on the nature of the interfaces employed. The Cisco LightStream 1010 uses a five-slot, modular chassis featuring the option of dual, fault-tolerant, load-sharing power supplies. The central slot in the Cisco LightStream 1010 is dedicated to a single, field-replaceable ATM switch processor module (ASP) that supports both the 5 Gbps shared memory, fully nonblocking switch fabric, together with its feature card, and the high-performance RISC processor that provides the central intelligence for the device.