Cisco WS-C4900M-RF | Catalyst 4900M 8 x Ports X2 2U Rack-mountable Layer 3 Managed Gigabit Ethernet Switch

Here are the technical specs for the Cisco Catalyst 4900M switch:

1. Switch type: L3 managed switch
2. Number of ports: 8 x X2
3. Rack-mountable: Yes
4. Refurbished: Yes
5. Data transfer rate: 320 Gbps
6. Forwarding performance: 250 Mpps
7. MAC address table size: 55,000 entries
8. VLAN support: Yes
9. Quality of Service (QoS) support: Yes
10. Jumbo frame support: Yes
11. Power supply: 2 x AC 120/230 V (50/60 Hz)
12. Dimensions (WxDxH): 43.9 cm x 46 cm x 4.4 cm

Helpful notes:
1. The Cisco Catalyst 4900M switch is a high-performance, low-latency, Layer 3 switch designed for data center aggregation and core layers.
2. It supports advanced features such as Virtual Switching System (VSS), which allows two physical switches to operate as a single logical switch.
3. The switch also supports Cisco IOS Software for enhanced security, manageability, and ease of use.