Cisco WS-C2950T-24 Hardware Installation Guide - Page 23
Back Panel Slots and Connectors of the Cisco 2901 Router
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250958 Chapter 1 Overview of the Routers Chassis Views Figure 1-2 Back Panel Slots and Connectors of the Cisco 2901 Router 1 2 345 6 EHWIC 3 DO NOT REMOVE DURING CF 1 NETWORKING OPERATION 9 EHWIC 2 EHWIC 1 DO NOT REMOVE DURING NETWORKING OPERATION CF 0 ISM PVDM1 PVDM0 9 EHWIC 0 EN AUX EN CONSOLE S G E 0 / 0 GE 0/1 1 USB 0 S L L 2901 8 7 1 EHWIC slots 1 0, 1, 2, and 3 (0, Far right) 2 USB2 serial port 3 Aux port 4 RJ-45 serial console port 5 10/100/1000 Ethernet ports (GE0/1) 6 10/100/1000 Ethernet port (GE0/0) 7 Ground 8 USB0 and USB1 (1, Top) 9 CompactFlash3 0 and 1 1. DW-EHWICs can fit into slot 0 and 1, and into slot 2 and 3. EHWIC slots support HWIC, VIC, and WIC. 2. USB = Universal serial bus 3. Only Advanced Capability CompactFlash (CF) purchased from Cisco operates in Cisco 2900 series and Cisco 3900 series ISRs. Legacy CF can impact and severely degrade performance in these routers. See the "Memory" section on page 1-21. When legacy CF is inserted, the following error message appears: WARNING: Unsupported compact flash detected. Use of this card during normal operation can impact and severely degrade performance of the system. Please use supported compact flash cards only. OL-18712-02 Cisco 2900 Series and 3900 Series Hardware Installation Guide 1-3