# 3Com 3C509B-CMB EtherLink III Network Card - 10Mbps Connectivity

Enhance your network with the **3Com EtherLink III Network Card 3C509B-CMB Assy 030021010 Rev-A**, designed for reliable 10Mbps connectivity. This card ensures efficient data transfer for both home and business environments.

This **network card** utilizes advanced technology, making it ideal for various networking applications and **control systems**. Experience consistent and dependable performance whether you're streaming media or transferring files. The **3Com EtherLink III** offers seamless integration into existing **automation** setups.

**Key Features:**

-   Provides a signaling rate of **10Mbps** for fast data transfer
-   Suitable for home and business use
-   Ensures smooth and seamless network performance
-   Easy to install for quick setup
-   Reliable connectivity for your computer system

**Specifications:**

-   Signaling Rate: 10Mbps
-   Model: **3C509B-CMB**
-   Assembly Number: **030021010 Rev-A**

Upgrade your network connectivity with the dependable **3Com EtherLink III Network Card**. Perfect for integrating into existing **industrial automation systems**. Get yours today

Also our company name is Ram Automations and also you can contact us on email info@ramautomations.com

## Details

- **Price:** 999.0 USD
- **Vendor:** Ram Automations
- **Type:** Electronics > Network Cards > Ethernet Cards
- **Tags:** 10Mbps, 3C509B-CMB, 3Com, connectivity, EtherLink III, ethernet card, network card

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 999.00 USD | In stock |

## Images

- 3Com 3C509B-CMB EtherLink III Network Card - 10Mbps Connectivity-Ram Automations

---

> Source: [Ram Automations](https://ramautomations.com/products/3com-3c509b-cmb-etherlink-iii-network-card)
> Updated: 2026-09-19