---
product_id: 82722440
title: "Cisco ISR 4331 - Router - Rack-Mountable, Black (ISR4331/K9)"
brand: "cisco"
price: "₨792889"
currency: LKR
in_stock: true
category: "Cisco"
url: https://www.desertcart.lk/products/82722440-cisco-isr-4331-router-rack-mountable-black-isr4331-k9
store_origin: LK
region: Sri Lanka
---

# 1 Gbps max data rate 3 internal antennas for robust dual-band coverage Built-in firewall & WPA2 security Cisco ISR 4331 - Router - Rack-Mountable, Black (ISR4331/K9)

**Brand:** cisco
**Price:** ₨792889
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your enterprise network with Cisco ISR 4331 — where speed meets security!

## Quick Answers

- **What is this?** Cisco ISR 4331 - Router - Rack-Mountable, Black (ISR4331/K9) by cisco
- **How much does it cost?** ₨792889 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/82722440-cisco-isr-4331-router-rack-mountable-black-isr4331-k9)

## Best For

- cisco enthusiasts

## Why This Product

- Trusted cisco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust Connectivity:** 7 Ethernet ports and 3 internal antennas ensure uninterrupted, dual-band coverage
- • **Rock-Solid Security:** Integrated firewall and WPA2 encryption to safeguard your network perimeter
- • **Rack-Ready Durability:** Weatherproof, rack-mountable design built to perform in demanding environments
- • **Enterprise-Grade Speed:** Blazing 1000 Mbps throughput to keep your branch ahead of the curve
- • **Seamless WAN Integration:** Optimized for distributed enterprise sites with Cisco IOS IP Base OS

## Overview

The Cisco ISR 4331 is a rack-mountable, enterprise-grade router designed for WAN optimization in distributed branch networks. Featuring 1 Gbps data transfer, advanced firewall security, and dual-band internal antennas, it delivers reliable, secure connectivity with Cisco IOS IP Base OS. Its weatherproof design and multiple Ethernet ports make it ideal for professional environments demanding high performance and resilience.

## Description

The Cisco 4000 Family Integrated Services Router (ISR) revolutionizes WAN communications in the enterprise branch. With new levels of built-in intelligent network capabilities and convergence, it specifically addresses the growing need for application-aware networking in distributed enterprise sites.

## Features

- Package Dimensions: 24 Lx 24 Hx 8 W (inches)
- Package Weight: 21 pounds
- Country of Origin : China

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00Q4E8OYK |
| Antenna Location | Business |
| Antenna Type | Internal |
| Best Sellers Rank | #242,952 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #4,386 in Computer Routers |
| Brand | Cisco |
| Built-In Media | Accessories, Router |
| Color | Black |
| Compatible Devices | Personal Computer |
| Connectivity Protocol | Ethernet |
| Connectivity Technology | Ethernet |
| Control Method | App |
| Coverage | enterprise branch network |
| Customer Reviews | 5.0 5.0 out of 5 stars (5) |
| Data Transfer Rate | 1000 Megabits Per Second |
| Frequency Band Class | Dual-Band |
| Global Trade Identification Number | 00882658710537, 08826587105370 |
| Has Internet Connectivity | Yes |
| Has Security Updates | Yes |
| Is Electric | Yes |
| Is Modem Compatible | No |
| Item Dimensions L x W x H | 24"L x 8"W x 24"H |
| Item Type Name | Cisco ISR4331/K9 4331 Router |
| Item Weight | 6.2 Kilograms |
| LAN Port Bandwidth | 300 Mbps |
| Manufacturer | CISCO |
| Maximum Upstream Data Transfer Rate | 1000 Megabits Per Second |
| Mfr Part Number | ISR4331/K9 |
| Model Name | ISR4331/K9 |
| Model Number | ISR4331/K9 |
| Number of Antennas | 3 |
| Number of Ports | 7 |
| Operating System | Cisco IOS IP Base |
| Other Special Features of the Product | Weatherproof |
| RAM Memory Installed | 4 GB |
| Router Firewall Security Level | True |
| Router Network Type | WAN |
| Security Protocol | WPA2 |
| Smart Home Compatibility | Not Smart Home Compatible |
| UPC | 065030846028 882658710537 |
| Voltage | 240 Volts |
| Warranty Description | 30 Days |
| Wireless Compability | 802.11a |

## Product Details

- **Brand:** Cisco
- **Color:** Black
- **Compatible Devices:** Personal Computer
- **Connectivity Technology:** Ethernet
- **Frequency Band Class:** Dual-Band
- **Included Components:** Accessories, Router
- **Model Name:** ISR4331/K9
- **Recommended Uses For Product:** Business
- **Special Feature:** Weatherproof
- **Wireless Communication Standard:** 802.11a

## Images

![Cisco ISR 4331 - Router - Rack-Mountable, Black (ISR4331/K9) - Image 1](https://m.media-amazon.com/images/I/41dTTEul8UL.jpg)
![Cisco ISR 4331 - Router - Rack-Mountable, Black (ISR4331/K9) - Image 2](https://m.media-amazon.com/images/I/41FBCzAqINL.jpg)

## Available Options

This product comes in different **Product Grade** options.

## Questions & Answers

**Q: El equipo tiene estas especificaciones 3ge,2nim,1sm,4g flash,4g dram,ipb ?**
A: Si.  Gracias por la pregunta.

**Q: is working an fully tested? Do you know if It have clock bug?**
A: Clock bug issue. We did not see it.
That doesn't mean, that it is not there. 
These are fully sanitized. Read notes before purchasing. Thank you

**Q: Does the equipment have these specifications 3ge, 2nim, 1sm, 4g flash, 4g dram, ipb?**
A: Those are what they can take.  The memory/dram is default. but they do not come with nim/sim cards

**Q: Hy i need to know how many dram/flash memory have/how many ge port have ?/how many nim have/ sm-x module ?/isc slots ?**
A: Hi,They come by default. Box has the items as below;SL-4330-IPB-K9	IP Base License for Cisco ISR 4330 SeriesPWR-4330-AC	AC Power Supply for Cisco ISR 4330CAB-AC	AC Power Cord (North America), C13, NEMA 5-15P, 2.1mNIM-BLANK	Blank faceplate for NIM slot on Cisco ISR 4400SM-S-BLANK	Removable faceplate for SM slot on Cisco 2900,3900,4400 ISRMEM-4300-4G	4G DRAM (2G+2G) for Cisco ISR 4330, 4350MEM-FLSH-4G	4G Flash Memory for Cisco ISR 4300 (Soldered on motherboard)SISR4300UK9-313S	Cisco ISR 4300 Series IOS XE UniversalThanks

## Frequently Bought Together

- Cisco ISR4331/K9 4331 Router,Black
- ACS-4330-RM-19=, 19-Inch Rack Mount Kit for Cisco ISR 4330
- OIKWAN USB Console Cable,USB to RJ45 Console Cable for Cisco Routers/AP Router/Switch Windows, Mac, Linux(1.8m,Blue)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-07-11*