---
product_id: 51783740
title: "com 4-Bay Mobile Rack Backplane - Trayless Hot Swap Mobile Rack Backplane for 3.5in SAS II/SATA III - 6 Gbps HDD (HSB4SATSASBA)"
brand: "startech"
price: "88.39 OMR"
currency: OMR
in_stock: true
reviews_count: 8
category: "Star Tech"
url: https://www.desertcart.com.om/products/51783740-com-4-bay-mobile-rack-backplane-trayless-hot-swap-mobile
store_origin: OM
region: Oman
---

# 6 Gbps SATA III/SAS II speed 4 hot-swap bays Aluminum vented cooling + fan com 4-Bay Mobile Rack Backplane - Trayless Hot Swap Mobile Rack Backplane for 3.5in SAS II/SATA III - 6 Gbps HDD (HSB4SATSASBA)

**Brand:** startech
**Price:** 88.39 OMR
**Availability:** ✅ In Stock

## Summary

> 💼 Elevate your data game with enterprise-grade hot-swap power!

## Quick Answers

- **What is this?** com 4-Bay Mobile Rack Backplane - Trayless Hot Swap Mobile Rack Backplane for 3.5in SAS II/SATA III - 6 Gbps HDD (HSB4SATSASBA) by startech
- **How much does it cost?** 88.39 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/51783740-com-4-bay-mobile-rack-backplane-trayless-hot-swap-mobile)

## Best For

- startech enthusiasts

## Why This Product

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

## Key Features

- • **Cool & Reliable Operation:** Vented aluminum enclosure plus speed-controlled fan keeps drives running at optimal temps (28-31°C).
- • **IT-Pro Backed & Supported:** 2-year warranty plus free lifetime 24/5 multilingual tech support for peace of mind.
- • **Blazing Fast Data Transfer:** Supports SATA I/II/III & SAS I/II with up to 6 Gbps throughput for enterprise-grade performance.
- • **Maximize Storage Flexibility:** Convert 3x 5.25" bays into 4 hot-swappable 3.5" drive slots for seamless upgrades.
- • **Secure & Tool-Free Drive Access:** Trayless design with individual ejection levers and key-lock system ensures quick, safe swaps.

## Overview

The StarTech.com 4-Bay Mobile Rack Backplane transforms three 5.25" bays into a high-speed, trayless hot-swap interface for up to four 3.5" SATA or SAS hard drives. Engineered with a vented aluminum enclosure and a speed-controlled fan, it maintains optimal drive temperatures while delivering up to 6 Gbps data transfer rates. Featuring individual ejection levers, a secure key-lock design, and broad compatibility with SATA I/II/III and SAS I/II drives, this rack is designed for IT professionals seeking reliable, scalable storage solutions backed by a 2-year warranty and lifetime tech support.

## Description

StarTech.com 4-Bay Mobile Rack Backplane - Trayless Hot Swap Mobile Rack Backplane for 3.5in SAS II/SATA III - 6 Gbps HDD (HSB4SATSASBA) : desertcart.co.uk: Computers & Accessories

Review: Reliable, cool drives. - I was slightly nervous about using these but I had an old tower case and an old server motherboard and wanted to create my own NAS so thought I'd give these a go. The worry was that the drives would be too cramped and run hot. Iniitally I ran 2 of these with four drives (2 per enclosure with a central gap) over a period of a month and monitored the temps. The drives ran consistently between 28 & 31 C. Then I loaded the final two and ran with all 6 ever since. Over two years these have run with the drives consistently between 28 & 31. Each drive has its own temp. and it's actually the drive, not the position as I tried swapping a couple round after a year to see if it made a difference. Under periods of really heavy load for an hour or more, one or two disks rise a degree then settle back. So enclosures and fans do what they are supposed to. Although slightly fiddly to fit 6 drives in two of these it wasn't hard.
Review: Great rack, works well. - First off, the first one I received was faulty. The power led on the top tray was intermittent. It was replaced promptly however. The replacement unit works a treat though. The drive activity led feeds are taken from the sata cable via the supplied cables. This is like all the Startech equipment I have bought, well made and works. Update My 2020, one fan has failed. Easy to replace.

## Features

- INCREASED PRODUCTIVITY: The mobile rack backplane for 3.5in SAS II/SATA III turns three 5.25in bays into a hot-swappable interface for up to four 3.5” SATA or SAS hard drives (HDD)
- MAXIMUM COMPATIBILITY: The hot swap backplane for 3.5in SAS II/SATA III can interface with SATA I/II/III and SAS I/II hard drives, an ideal solution for enterprise system applications; Power and status LEDs for each bay
- EASY TO USE: For a quick and secure method of installing and removing drives, this trayless hot swap mobile rack backplane features individual ejection levers for each bay and a key-lock design (includes two keys)
- MAINTAIN OPTIMAL TEMPERATURE: To help prevent drive failure, the 4-drive hot swap backplane features a vented solid aluminum enclosure that provides excellent heat dissipation in addition to a built-in fan with speed control; UL VO flammability rated
- THE IT PRO'S CHOICE: Designed and built for IT professionals, this 4-Bay hard drive backplane is backed for 2 years, including free lifetime 24/5 multi-lingual technical assistance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00OUSU8MI |
| Best Sellers Rank | 34,440 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 167 in Enclosures |
| Brand | StarTech |
| Brand Name | StarTech |
| Colour | Black |
| Compatible Devices | Desktop |
| Country of Origin | China |
| Customer Reviews | 4.2 out of 5 stars 555 Reviews |
| Data Transfer Rate | 750 Megabytes Per Second |
| Enclosure Material | Aluminium |
| Global Trade Identification Number | 00065030859547, 05057454485711, 07426800234200 |
| Hardware Interface | SATA 6.0 Gb/s |
| Hardware Platform | x86_64 |
| Hardware interface | SATA 6.0 Gb/s |
| Hardware platform | x86_64 |
| Item Weight | 1.28 Kilograms |
| Item weight | 1.28 Kilograms |
| Manufacturer | StarTech.com |
| Material | Aluminium |
| Memory Storage Capacity | 6 GB |
| Supported Devices Quantity | 4 |
| The Standard Size of the Hard Drive or the Bay the Hard Drive Is Compatible With (in inches) | 3.5 Inches |
| UPC | 650308595472 650361661282 065030859547 012305135486 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** StarTech
- **Colour:** Black
- **Hardware interface:** SATA 6.0 Gb/s
- **Hardware platform:** x86_64
- **Material:** Aluminium

## Images

![com 4-Bay Mobile Rack Backplane - Trayless Hot Swap Mobile Rack Backplane for 3.5in SAS II/SATA III - 6 Gbps HDD (HSB4SATSASBA) - Image 1](https://m.media-amazon.com/images/I/81+LtsGjrAL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Can you replace rear fan with quiet aftermarket?**
A: I went as far as to buy a 80 mm to 120 mm adapter and stick an ultra quiet 120 mm fan.  The result is exactly what I wanted -- quiet running, more air drawn over the drives, and cooler drives.

**Q: Is trayless or ones with trays better for minimizing rattles and vibration?**
A: I can't answer the vibration or rattle comparison, but I have had this unit since Oct. 2014, and have had no issues with the unit or hard drives going bad?  I am using in a home server running 24/7.  I bought it in case I needed to swap drives, but i haven't had to yet...

**Q: Does this work with 6tb western digital red hard drives?**
A: works with any SATA or SAS hard drive (obviously you must connect the drive bay to a Sata or Sas controller).  We use western digital RE drives and one thing you need to be aware, once you insert the drive, you need to open the door slightly and push drive firmly unto the backplane with your thumb, then reclose the door.  This ensures a square and fully inserted drive onto the backplane.

**Q: Do i need a separate power supply cable?**
A: Yes, you can run one cable from the PSU peripheral to the cage.  But be ware, do not daisy chain more than one cage (if you buy more than one).   Each drive can consume up to 10-12 Watts depending on your drive, and say another 2 watts for the fan itself, and you are getting close to the 56 Watt limit for a line on the PSU/SATA spec.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable, cool drives.
*by R***A on 11 April 2022*

I was slightly nervous about using these but I had an old tower case and an old server motherboard and wanted to create my own NAS so thought I'd give these a go. The worry was that the drives would be too cramped and run hot. Iniitally I ran 2 of these with four drives (2 per enclosure with a central gap) over a period of a month and monitored the temps. The drives ran consistently between 28 & 31 C. Then I loaded the final two and ran with all 6 ever since. Over two years these have run with the drives consistently between 28 & 31. Each drive has its own temp. and it's actually the drive, not the position as I tried swapping a couple round after a year to see if it made a difference. Under periods of really heavy load for an hour or more, one or two disks rise a degree then settle back. So enclosures and fans do what they are supposed to. Although slightly fiddly to fit 6 drives in two of these it wasn't hard.

### ⭐⭐⭐⭐⭐ Great rack, works well.
*by M***N on 21 April 2014*

First off, the first one I received was faulty. The power led on the top tray was intermittent. It was replaced promptly however. The replacement unit works a treat though. The drive activity led feeds are taken from the sata cable via the supplied cables. This is like all the Startech equipment I have bought, well made and works. Update My 2020, one fan has failed. Easy to replace.

### ⭐⭐⭐⭐ Works as intended
*by A***R on 18 September 2020*

Both HDD bays work as intended but it does not fit flush with the front of my 5.25" drive bays(see picture) which every other device I have ever installed did. The internal fan is also annoyingly loud, I decided to remove this which is easy to do. If security is in mind the locking function is just an Allen bit, while great for accidental opening of the bay security is a zero. Other than those small issues of which the last one doesn't effect me I would highly recommend this drive bay over the cheaper alternatives on Amazon.

## Frequently Bought Together

- StarTech.com 4-Bay Mobile Rack Backplane - Trayless Hot Swap Mobile Rack Backplane for 3.5in SAS II/SATA III - 6 Gbps HDD (HSB4SATSASBA)
- Noctua NF-A8 PWM, Premium Quiet Fan, 4-Pin (80mm, Brown)
- 4U Rackmount Server Chassis with 6 x 5.25 Front Bays + 1 x 3.5 + 4 x 2.5 Bays

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-02*