# MOXA 4-port RS-422/485 PCIe serial card, low profile

**URL:** https://aio.lv/en/product--moxa-47293--11663554
**Data updated:** 2026-02-17 11:02 (EET)
**Category:** I/O Adapters & Controllers
**Manufacturer:** MOXA
**Manufacturer code:** 47293
**EAN:** 5706998547798
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 626.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 517.76 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--moxa-47293--11663554

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

MOXA 4-port RS-422/485 PCIe serial card in a low-profile form factor. Provides four isolated serial ports for connecting industrial devices that use RS-422 or RS-485 communication. Designed for installation in PCI Express slots, it supports serial networking and control tasks, enabling reliable data exchange with modems, PLCs, sensors and other serial equipment in embedded or desktop systems.

## Long description

MOXA 4-port RS-422/485 PCIe serial card, low profile provides four isolated serial ports in a compact PCI Express form factor. Designed for installation in systems with PCIe slots, this low-profile card supports RS-422 and RS-485 differential signaling for industrial serial communication. It is intended for integration into embedded controllers, industrial PCs and small form factor systems where reliable serial data exchange with modems, PLCs, sensors and other serial devices is required.
Advantages
The card offers four isolated RS-422/485 ports to reduce the risk of ground loops and electrical interference in industrial environments. Its low-profile design enables installation in slim or space-constrained systems while maintaining full PCIe connectivity. Hardware-level isolation and support for differential serial standards ensure stable long-distance communication and compatibility with a wide range of legacy and industrial equipment.
Suitable for
 Connecting PLCs and industrial controllers to host systems
 Serial networking of sensors and data acquisition modules
 Integration into embedded or compact desktop systems with limited space
 SCADA and process control communication links
Key specifications
 Interface: PCI Express low-profile card
 Port type: 4 × isolated RS-422/RS-485 serial ports (differential)
 Isolation: Hardware isolation on serial ports for protection against ground loops and transient voltages
 Form factor: Low-profile bracket for installation in compact systems
 Signal support: Half-duplex and full-duplex serial modes depending on wiring and device
How to use
Install the card into an available PCIe slot in a powered-off system following the host platform’s service manual. Fit the low-profile bracket if the chassis requires it, secure the card and reconnect system power. Configure serial port parameters in the operating system or application software to match connected devices—select baud rate, parity, data bits and stop bits as required. For RS-485 half-duplex setups, configure direction control either via hardware auto-direction (if supported) or through the driver/application layer.
Usage recommendations
Route serial cabling separately from high-voltage or noisy power lines and use twisted-pair shielded cable for differential RS-422/RS-485 signals. Verify proper termination and biasing for multi-drop RS-485 networks to ensure reliable communication. Consult your system documentation for driver installation and IRQ/resource configuration if needed.

## FAQ

### How much does the MOXA 4-port RS-422/485 PCIe, Low profile cost, and is it available for purchase?

The price is 626.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can MOXA 4-port RS-422/485 PCIe, Low profile be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All MOXA products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized MOXA service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11663554/66957580_large.webp