Main System Motherboard for a Cisco 3845 Integrated Services Router ISR G1 For Sale
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Main System Motherboard for a Cisco 3845 Integrated Services Router ISR G1
Price: US $71.99
This is the Main System Motherboard for a Cisco 3845 Integrated Services Router (ISR G1).
Target System: Cisco 3845 Modular Router (3RU flagship chassis of the original ISR generation)
Base Board Assembly Part Number: Cisco 73-8932-xx / 800-24424-xx (commonly listed as CISCO3845-MB)
Tracking Number: D089324
Key On-Board Architecture & Subsystems
Front-Panel I/O Extension Arm (Bottom-Left): The distinctive elongated PCB "neck" extends to the front chassis bezel, hosting the two built-in 10/100/1000Base-T Gigabit Ethernet ports (GE 0/0 and GE 0/1) alongside their status LEDs and line isolation transformers.
Internal Expansion / AIM Slots (Top-Left):
3× White AIM Sockets: Accommodates internal Advanced Integration Modules (such as `AIM-VPN/SSL-3), hardware data compression, or ATM modules).
System Memory (DDR SDRAM):
2× Black 184-pin DIMM Sockets: Supports up to 1 GB of system ECC DDR memory for Cisco IOS image execution and routing tables.
DSP / Voice Mezzanine Headers: Dedicated multi-pin sockets in the center to host PVDM2 (Packet Voice DSP Modules) for high-density VoIP transcoding and conferencing.
High-Density Chassis Backplane Interconnect (Bottom Center): Segmented multi-pin backplane connectors that bridge high-speed PCIe/PCI bus lines directly to the 4× NME (Network Module Enhanced) and HWIC/VIC slot cage.
Processing Engines:
Marvell System Controller / Host Bridge (MV64xxx Discovery controller).
Cisco Proprietary Forwarding ASICs (under the central BGA packages).
Power & Auxiliary Interface (Right Edge): High-density screw-locked D-sub connector and DC power header to interface directly with the 3845 redundant internal power supply units (AC or -48V DC PoE).
