Storage Tower IV

The Storage Tower IV is another innovative storage enclosure solution from Addonics that offers tremendous customization flexibility to fit practically any storage application. Comes with four standard 5.25" drive bays, the Storage Tower IV has a strong power supply integrated into a compact and sturdy aluminum chassis. The four drive bays can accommodate up to four full height optical drives or six 3.5" hard drives or a combination of these devices in various mixes. A variety of SATA, IDE or ATAPI devices can be installed into the Storage Tower IV. The drives can be individually interfaced to a computer via USB 3.0/2.0, eSATA, or combined into one mini SAS connection or a Port Multiplier (PM) to form a powerful RAID system.



Using eSATA or the mini SAS connection, you can build yourself a high performance external storage system a terabyte storage farm using large capacity and connect it up to 6 feet away from the computer! Any SATA devices inside the Storage Tower can be easily converted into eSATA. Each drive can be connected directly to a eSATA host controller for maximum throughput. For better cable management, multiple SATA devices inside the Storage Tower can be connected to system via one cable by installing a Port Multiplier (PM) or a mini SAS bridge.

The Storage Tower with a built-in Hardware Port Multiplier is an ideal external RAID storage solution for sharing with different computers. Once the HPM is configured, the entire RAID set can be attached to any eSATA port or USB 3.0 port of any system. Click here for a Port Multiplier Tutorial.


  • Great for variety of storage applications - external RAID storage, Video storage, Server storage
  • Four standard 5.25" drive bays for mounting- 
  • Choice of back panels with the following connections:
    • eSATA and USB 3.0/2.0 port from Hardware Port Multiplier-XU (AD5HPMREU). Connect up to five SATA/SATA II/SATA III hard drives to computer via a single eSATA or USB cable. Can be configured as RAID 1, 0, 10, 5, 3, BIG, or Clone mode or as individual drive* (RAID setting is configured through onboard dip switches or included Windows software)
    • eSATA port from 5-Port 6G Rack Mount PM (AD5SARM6G). Connect up to five SATA/SATA II/SATA III hard drives to computer via one eSATA cable (requires a PM compatible SATA controller). Support SATA 3.0 6Gbps throughput. Drives appears as individual drive or can form a RAID group using the RAID utility from the OS or the controller
    • Mini SAS bridge (AD4SMSAS) to connect up to four SATA/SATA II/SATA III hard drives to system equipped with mini SAS connector (SFF-8088)
    • Four eSATA connectors (AD4ESASB) for connecting four SATA/SATA II/SATA III ard drives to system via four individual eSATA cables.
  • Stylish clear acrylic exterior
  • Light weight and sturdy aluminum chassis
  • Compact size
  • Ventilated side panels for efficient air flow
  • Dual ball bearing high CFM low noise cooling fans
  • 150W 110/240 power supply
  • Individual drive can be hot swapped* when SATA Mobile Racks or Disk Array are installed into the drive bay


Individiaul drive configuration is only supported with PM compatible controllers or via USB connection.

Number of Drive Bays Four standard 5 1/4" drive bays
Interface Connectors on back panel
  • ST4PM6G-A - eSATA connector
  • ST4HPMXU-A - eSATA and USB 3.0/3.0 connectors
  • ST4MS-A - 1 mini SAS connector (SFF-8088)
  • ST4SAUS-A - 4 USIB connectors
  • ST4ESA-A - 4 eSATA connectors
  • ST4 -A - no interface connector

Supported Operating Systems

  • USB 3.0/2.0 - Windows  Me, 2000, XP, Vista, 7,2003, Linux kernel 2.4 and higher, Solaris 9.0 and higher, Mac OS 10
  • eSATA - DOS, Windows NT/SP6, 98SE, Me, 2000, XP, 2003, Linux kernel 2.4 and higher, Mac OS 10

Power Supply:

150 Watts 110/240V input

Cooling fan two 40 x 40 mm. ball bearing type


~ 5.65 lb (2.56 kg)

Size (W x D x H):

~ 8.19 x 11.75 x 8 inch  (208 x 298 x 203 mm)

Operating Temperature and Relative Humidity:

0°C - 50°C, 5% - 90% RH

Operating Temperature and Relative Humidity:

-20°C - 50°C, 0% - 95% RH (non-condensing)


One Year


System Requirements

  • PC/AT or Compatible System
  • One of the following IO ports: eSATA, USB 2.0/1.1, or Firewire/iLink port
  • Pentium II 350 MHz or Greater
  • Minimum 64 MB RAM



storage IV
Applies to:


Storage Tower IV