Cisco WS-C2950-24 Hardware Installation Guide - Page 43
Power Supplies, Router Platform, Router, Model, Hot Swap, Internal, Dual DC, Internal POE, POE Boost
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Chapter 1 Overview of the Routers Hardware Features Table 1-8 Router Memory Specifications (continued) Router Platform Cisco 3925E Cisco 3945E DRAM Type-VLP RDIMMwith ECC. VLP RDIMM sizes-512 MB, 1GB. VLP RDIMM expansion slots-2, both must be the same density. Default ECC memory modules-Two 512-MB modules for 1 GB. Maximum memory-2.0 GB; 1.0 GB in each slot. Type-VLP RDIMMwith ECC. VLP RDIMM sizes-512 MB, 1GB. VLP RDIMM expansion slots-2, both must be the same density. Default ECC memory modules-Two 512-MB modules for 1 GB. Maximum memory-2.0 GB; 1.0 GB in each slot. Power Supplies Cisco 2900 series and Cisco 3900 series ISRs support a variety of power supply configurations. All power supplies are field replaceable and externally accessible with the exception of the Cisco 2901 ISR. The Cisco 2901 ISR has an internal power supply, which requires removing the cover for replacement. If configured with dual power supplies or an Redundant power supplies (RPS), the power supplies are hot swappable. RPSs require an RPS adapter. There are two versions of the RPS adapter, one for the Cisco 2911 and one for the Cisco 2921 and 2951. Both use the Cisco Redundant Power System 2300. Configurations include AC and DC (with and without IP), Dual DC, internal POE, and POE boost. • Table 1-9 summarizes the power options. • Table 1-10 shows POE power rates. Table 1-9 Cisco 2900 Series and Cisco 3900 Series Field Replaceable Unit Power Options Router AC + Model AC POE Internal DC Hot Swap1 RPS2 External RPS3 Dual DC4 Internal POE 2901 X X - - - - X 2911 X X X X - X - X 2921 X X X X - X - X 2951 X X X X - X - X 3925 X X X X X - - X 3925E X X X X X - - X 3945 X X X X X - - X 3945E X X X X X - - X 1. Must have RPS or POE boost installed. 2. Internal RPS means that and additional power supply can be added to the PS2 slot. 3. Uses external Cisco Redundant Power System 2300 with an adapter inserted in the chassis. 4. Dual DC means two separate DC inputs to the same power supply. Internal POE Boost - - - - X X X X External POE Boost5 - X X X - - - - OL-18712-02 Cisco 2900 Series and 3900 Series Hardware Installation Guide 1-23