---
product_id: 31219856
title: "ATTO ExpressSAS R644 4 Port External/4 Port Internal 6Gb/s SAS/SATA RAID Adapter"
brand: "atto"
price: "$12.69"
currency: USD
in_stock: false
url: https://www.desertcart.us/products/31219856-atto-expresssas-r644-4-port-external-4-port-internal-6gb
store_origin: US
region: United States of America
---

# ATTO ExpressSAS R644 4 Port External/4 Port Internal 6Gb/s SAS/SATA RAID Adapter

**Brand:** atto
**Price:** $12.69
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** ATTO ExpressSAS R644 4 Port External/4 Port Internal 6Gb/s SAS/SATA RAID Adapter by atto
- **How much does it cost?** $12.69 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/31219856-atto-expresssas-r644-4-port-external-4-port-internal-6gb)

## Best For

- atto enthusiasts

## Why This Product

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

## Description

The ExpressSAS R644 RAID adapter provides 6Gb/s SAS/SATA connectivity to Direct Attached Storage via 4 external and 4 internal ports. With transfer rates of up to 1200MB/s per port, the R644 is well suited for high-bandwidth workflows, such as digital content creation, streaming video and audio, transactional databases, and email and Web servers. The R644 combines advanced engineering and innovative features to ensure smooth data transfers and consistent performance. Leveraging ATTO's market-tested RAID stack and exclusive latency management features, the R644 helps customers create, share and protect data and digital assets more effectively. Brand Name: ATTOController Type: 6Gb/s SASController Type: Serial ATA/600Form Factor: Plug-in CardHost Interface: PCI Express 2.0 x8Product Type: SAS ControllerRAID Levels: 0RAID Levels: 1RAID Levels: 10RAID Levels: 4RAID Levels: 40RAID Levels: 5RAID Levels: 50RAID Levels: 6RAID Levels: 60RAID Levels: DVRAIDRAID Levels: JBODRAID Supported: YesTotal Number of SAS Ports: 8ControllersController Type: 6Gb/s SASController Type: Serial ATA/600RAID Levels: 0RAID Levels: 1RAID Levels: 10RAID Levels: 4RAID Levels

## Features

- More for the money with this high quality Product
- Offers premium quality at outstanding saving
- Excellent product
- 100% satisfaction

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007PRWNAQ |
| Brand | ATTO |
| Date First Available | August 21, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 245 x 185 x 45 inches |
| Item Weight | 3.66 pounds |
| Item model number | ESAS-R644-000 |
| Manufacturer | ATTO TECHNOLOGY |
| Product Dimensions | 245 x 185 x 45 inches |
| Standing screen display size | 6.6 Inches |

## Product Details

- **Brand:** ATTO
- **Item Weight:** 3.66 Pounds
- **Manufacturer:** ATTO TECHNOLOGY
- **UPC:** 012303036327

## Images

![ATTO ExpressSAS R644 4 Port External/4 Port Internal 6Gb/s SAS/SATA RAID Adapter - Image 1](https://m.media-amazon.com/images/I/41t9xb15X4L.jpg)

---

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---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-12*