What Is "4461"? It Depends on the Vendor
"4461" is not a single product — it is a model number used by more than one manufacturer for two very different classes of equipment. If you arrived here looking for "4461", the most likely matches are the Cisco 4461 Integrated Services Router (ISR 4461), a branch-office router from Cisco's 4000 Series, and the NI PCI-4461 / PXI-4461, a dynamic signal acquisition (DSA) module from National Instruments used for precision sound and vibration measurement. Both are legitimate, well-documented products; they simply have nothing in common technically. Identifying which one you mean is the first step, because the replacement or companion hardware you need is completely different in each case.
| Model | Vendor | Category | Primary Role |
|---|---|---|---|
| Cisco 4461 (ISR4461) | Cisco | Branch router | WAN/SD-WAN routing, voice, security services at a branch site |
| PCI-4461 | NI (National Instruments) | PCI DAQ module | Precision dynamic signal acquisition inside a desktop/server chassis |
| PXI-4461 | NI (National Instruments) | PXI DAQ module | Same measurement capability in a PXI chassis |
Cisco 4461 Integrated Services Router
The Cisco 4461 is a member of the 4000 Series Integrated Services Routers, released in November 2018 and designed for branch and regional-office
