came with 32 fixed 100BaseT Ethernet ports and 2 modular bays 8x00 - Fully modular hardware, came in either 8 slot (8000) or 16 slot (8600) versions. The modules for the 8x00 included Control Modules, 100BaseT Ethernet, 1000BaseT Ethernet, 1000BaseX GibabitEthernet with interchangeable GBICs, including PoS, ATM, Serial, T1/E1, and T3/E3. 38000 - Fully modular hardware, differed from the rest of the RS range physically due to the modular slots being vertical. ES Family ES 2010 - Fixed 24 10/100 port multilayer switch designed for network access/network edge role. It had two GBIC ports for 1G Ethernet uplinks. The ES range did not support WAN ports or MPLS. Networking companies of the United States Defunct networking companies