---
product_id: 32187764
title: "ATTO ExpressSAS H644 Low Profile 4 Internal/4 External Port 6Gb/s SAS/SATA PCIe 2.0 Host Bus Adapter"
brand: "atto technology"
price: "€ 751.43"
currency: EUR
in_stock: true
category: "Personal Computers"
url: https://www.desertcart.gr/products/32187764-atto-expresssas-h644-low-profile-4-internal-4-external-port
store_origin: GR
region: Greece
---

# ATTO ExpressSAS H644 Low Profile 4 Internal/4 External Port 6Gb/s SAS/SATA PCIe 2.0 Host Bus Adapter

**Brand:** atto technology
**Price:** € 751.43
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** ATTO ExpressSAS H644 Low Profile 4 Internal/4 External Port 6Gb/s SAS/SATA PCIe 2.0 Host Bus Adapter by atto technology
- **How much does it cost?** € 751.43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/32187764-atto-expresssas-h644-low-profile-4-internal-4-external-port)

## Best For

- atto technology enthusiasts

## Why This Product

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

## Description

The ExpressSAS H644 provides high-speed 6Gb/s performance at 600MB/s per port. By utilizing a serial, point-to-point architecture, in addition to PCI Express 2.0 bus technology, ExpressSAS 6Gb/s HBAs are engineered for demanding IT and digital media applications which require more performance than 3Gb/s SAS/SATA can provide. The ExpressSAS H644 features four internal ports, four external ports and allows connections to 256 end-point devices. Included with all ATTO HBAs is an easy-to-use utility enabling management, monitoring and configuration which leverages an intuitive GUI. ATTO's exclusive, field-proven Advanced Data Streaming (ADSTM) Technology helps users meet the most demanding performance requirements of bandwidth-intensive applications. ADS achieves this performance increase by integrating a combination of features engineered to allow for the controlled acceleration of data transfers. / ATTO ExpressSAS H644 8-channel SAS Controller - PCI Express x8 - 600MBps Per Port - 1 x 4-pin SFF-8088 mini SAS 300 - Serial Attached SCSI External, 1 x 4-pin SFF-8087 mini SAS 300 - Serial Attached SCSI Internal / PCI Express x8 - 600MBps Per Port - 1 x 4-pin SFF-8088 mini SAS 300 - Serial Attached SCSI External, 1 x 4-pin SFF-8087 mini SAS 300 - Serial Attached SCSI Internal

## Features

- Controller Type: SAS Controller
- Interface: PCI Express 2.0 x8

## Images

![ATTO ExpressSAS H644 Low Profile 4 Internal/4 External Port 6Gb/s SAS/SATA PCIe 2.0 Host Bus Adapter - Image 1](https://images-na.ssl-images-amazon.com/images/I/11LgTtuGHPL.jpg)
![ATTO ExpressSAS H644 Low Profile 4 Internal/4 External Port 6Gb/s SAS/SATA PCIe 2.0 Host Bus Adapter - Image 2](https://images-na.ssl-images-amazon.com/images/I/312TbGfhpZL.jpg)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-21*