Cisco WS-C3900 Catalyst C3900 20-Port Token Ring Switch

The Cisco Systems Catalyst 3900 is a family of second-generation Token Ring switches that combines unsurpassed performance and functionality with a cost-effective price, ideally suited for desktop connectivity. The Catalyst 3900 comes with 20 fixed ports and a unique FlexSlot that can accommodate two expansion modules or, in the future, one double-wide module. Available expansion modules include a 1-port ATMOC-3c uplink, a 2-port fiber and copper Inter-Switch Link (ISL) uplink for Token Ring transport over Fast Ethernet, a 4-port fiber Token Ring module, and a 4-port copper Token Ring module.

Manufacturer: Cisco Systems, Inc
Manufacturer Part Number: WS-C3900
Brand Name: Cisco
Product Line: Catalyst
Product Series: 3900
Product Name: Catalyst 3900 Token Ring Switch
Product Type: Token Ring Switch
Total Number of Network Ports: 20
Token Ring Port: Yes
Management Port: Yes
Stack Port: Yes
Number of Total Expansion Slots: 3
Expansion Slot Type: Stacking Module
Layer Supported: 2
Manageable: Yes
Management: SNMP, VLAN, CiscoView, RMON
Standard Memory: 8 MB
Memory Technology: DRAM
Input Voltage: 110 V AC
Input Voltage: 220 V AC
Power Source: Power Supply
Height: 1.7"
Width: 17.3"
Depth: 15.3"
Additional Information: Weight: 16-18 lb (6-6.7 kg), depending on configuration