Catalyst 4900M 20-port 10/100/1000 RJ-45 half card
Cisco WS-X4920-GB-RJ45=, Silver, 1 Gbit/s, Wired, Ethernet, Fast Ethernet, Gigabit Ethernet, Catalyst 4900M, 7.4 x 8.23 x 1.93" (188 x 209 x 49 mm)
Cisco WS-X4920-GB-RJ45=. Product color: Silver. Data transfer rate: 1 Gbit/s, Connectivity technology: Wired, Networking features: Ethernet, Fast Ethernet, Gigabit Ethernet. Compatibility: Catalyst 4900M. Dimensions (WxDxH): 7.4 x 8.23 x 1.93" (188 x 209 x 49 mm), Weight: 24.7 oz (700 g). Compatible operating systems: Cisco IOS