FatCage MB155SP-B
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Related Products:  
mb975sp-b r1 mb876sk-b mb153sp-b mb830sp-b
Introducing the FatCage MB155SP-B, a 5-in-3 SATA 6Gbps hot swappable internal RAID backplane cage. This is the lite version of the MB45X series by removing the monitoring features, increasing the cooling performance, and reducing the overall cost, while keeping the same 3 year warranty and the core tray system for hot swapping and maintenance are kept for the best reliability in the market.
Maximum Space Saving & Reliable Build
The MB155SP-B built to be a lighter module, while more importantly maintaining the same level of quality, build, and service you’d expect from an Icy Dock product. While the design has gone through some changes, the space saving design is still established. The backplane module allows up to a massive 5 x 3.5” SATA III hard drives, while only consuming three external 5.25” bays.

The FatCage has also been redesigned for the type of power connector accepted. 15 pin SATA power is used to provide better accessibility for most modern host systems. They are also compatible with cables with metal latches to improve security when installed into a system.
High-Octane Airflow
Along with being a lighter package, the cooling has been redesigned to provide the utmost airflow to your hard drives. The FatCage uses a full metal body that allows for the effective heat dissipation possible in various types of applications. Meanwhile, our enhanced direct air flow design allows the included a large 92mm cooling fan to raise its efficiency to cool down your hard drives, by closing and rerouting most vents to route incoming air directly to the cooling fan. There are dual exhaust vents on the top and bottom to additionally help keep drives temperatures while improve airflow.
In addition, the backplane logic PCB has larger cut outs in key locations to allow more air to flow into and exit the MB155SP-B, making it an ideal system to store and cool your hard drives.
Modularized Cooling System
The included 92mm cooling fan is fully modularized for the most hassle free experience of replacing and maintaining and is compatible with most aftermarket cooling fans of the same size. To expand the range of compatible fans, both 2 and 3 pin fan power ports are available and are conveniently located for great accessibility. This provides the user the most flexible options available and freedom desired.
The FatCage MB155SP-B features a 3 mode fan speed jumper which can be changed at will to control the fan speed easily. The 3 modes include: High, Low and Off with respective speeds of 100%, 60% and 0% relative to maximum output. The settings can be simply changed by removing the jumper and relocating into the desired setting.
Interchangeable EZ-Tray System
The MB155SP-B uses an interchangeable EZ-Tray drive tray that is compatible with FatCage and DataCage enclosures include DataCage MB876SK-B (1x Drive), FatCage MB901SPR (2x Drive w/ HW RAID 1), and MB153SP-B (3x Drive). This allows you to continue using the same trays from these enclosures and exchange drives between systems without unmounting the drive from the tray.
Install *EZConvert 2.5" to 3.5" drive adapter on the EZ-Tray allows you quickly swap out 2.5" SSD/HDD without using a tool or unscrewing drives. This allows for convenience and versatility and will save you time and money from having to buy a separate 2.5" drive enclosures or trays. (*EZConvert adapter needs to purchase separately)
Drive Tray
Key Features
* 5 in 3 RAID backplane module.
* Fits five 3.5” SATA I / II / III (SATA 6Gbps) hard drives in three external 5.25” device bay
  & fully supports SATA Hot-Swap function.
* Supports SATA 3.0 up to 6Gbps / / SAS 3.0 single channel up to 12Gbps
* Large 92mm cooling fan with full metal body for excellent heat dissipation for
  the most intense applications.
* Compact and space saving to fit multiple drives.
* Interchangeable EZ-Tray tray design for internal drive security, exchangeability,
  expandability and maintenance capabilities. Compatible with DataCage
  Classic MB45X, ICYBento MB559 & ICYCube MB561 series.
* Enhanced Direct Air Flow Design – Shuts off most vents while adding larger ventilation slots on
  the backplane PCB.
* Uses SATA 15 power ports for best compatibility with the newest power supplies.
* Individual LED hard drive power & activity status notification.
* Active Power Technology (APT) - individual led & cooling fan only powers up if there is a drive installed
  in the bay.
* 3 Mode Fan Speed Jumper of high / low / off (100%, 60%, 0%).
* Fully Modularized rear outtake cooling fan for easy maintenance or aftermarket replacement with 2 and 3 pin
  power ports available.
* ICY DOCK 3 year warranty equivalent to hard drive manufacturer warranty to ensure maximum reliability and
  long life.
3 Years Warranty
ICY DOCK FatCage MB155SP-B 5 x 2.5”/3.5” SATA/SAS Hard Drive Backplane Cage in 3x External 5.25" Bay
Model Number :
Color :
Support Drive Size :
3.5” HDD
Compatible Drive Type :
SATA / Single channel SAS (SAS host required)
Number of Drives :
Max Drive Height :
Drive Bay :
3 x 5.25" device bay
Host Interface :
5 x 7pin SATA port
Power Input :
3 x 15pin SATA Power
Transfer Rate :
SATA 3.0 up to 6 Gbps / SAS 3.0 up to 12Gbps
Support HDD Capacity :
No Limitation
Drive Cooling :
92 x 92 x 25mm fan
RAID Function :
Structure / Material :
Metal body with partial plastic
Support Hot-Swap :
Drive Security :
Product Dimension (L x W x H) :
200.4 x 146.4 x 125mm
Product Net Weight :
Package Gross Weight :
RAID Status LED Indicator :
Drive Activity LED Indication :
Drive power: solid green; HDD access: flashing green
Package contents :
1 - Device, 1 - user manual, 48 - screw
Product Name :
5 x 3.5” HDD in 3 x 5.25” Bay Hot Swap SATA 6Gbps HDD Rack/ Cage/ Module
SATA Connector Insertion Rate :
Humidity :
5%~65% RH
OperatingTemperature :
0°C to 60°C (32°F to 140°F)
Storage Temperature :
-35°C to 70°C (-31°F to 158°F)
Compliance :
Warranty :
3 years


ICY Concepts
Expand Your Data Storage Capability with ICY DOCK Fatcage and Datacage
Upgrading a system with SSDs has never been easier! ICY DOCK’s 3.5” mobile racks (DataCage and FatCage series) now come with our new MB453TRAY-2B which is compatible with both 3.5” and 2.5” HDD/SSD. This means with the MB455SPF-B/MB155SPF-B, a user can use 2x SSD in RAID 0 for increased OS speed + 3x 8TB HDD for large data storage. Or using an MB453SPF-B/MB153SPF-B with 2x 8TB HDD in RAID 1 for redundancy + 1x SSD for OS speed upgrade. It is a cost effective way to speed up your system by upgrading to SSD while keeping your old drive for storage purposes. In addition, if you already have an older version DataCage or FatCage product, you can easily upgrade your system by obtaining the MB453TRAY-2B.


Frequent Asked Questions
Q: Does MB155SP-B support the new SATA 3.3 Power Disable feature (PWDIS)?

A: The MB155SP-B does not support the SATA 3.3 PWDIS feature. If you install the SATA HDD/SSD with PWDIS in MB155SP-B, the drive will not spin, and the system won't detect the drive. See the list below for known SATA HDD/SSD with the PWDIS feature.


Known SATA HDD/SSD with Power Disable Feature (PWDIS)

WD Ultrastar DC HC510
HUH721008ALE600/1/4 HUH721010ALE600/1/4 HUH721008ALN600/1/4
Ultrastar DC HC520
HUH721212ALE600/4 HUH721212ALN600/4  
Ultrastar He8
HUH728060AL4200/1/4/5 HUH728060AL5200/1/4/5 HUH728080AL4200/1/4/5
Ultrastar 7K6000
HUS726020ALE610/1/4 HUS726040ALE610/1/4 HUS726050ALE610/1/4
HUS726060ALE610/1/4 HUS726020ALN610/1/4 HUS726040ALN610/1/4
HUS726050ALN610/1/4 HUS726060ALN610/1/4  
Ultrastar C15K600
HUC156030CS4200/1/4/5 HUC156045CS4200/1/4/5 HUC156060CS4200/1/4/5
HUC156030CSS200/1/4/5 HUC156045CSS200/1/4/5 HUC156060CSS200/1/4/5
Samsung PM883
Seagate EXOS 7E8
ST1000NM0045 ST1000NM0075 ST2000NM0045
ST2000NM0085 ST3000NM0025 ST3000NM0035
ST3000NM0045 ST4000NM0025 ST4000NM0065
EXOS 15E900
ST300MP0006 ST300MP0016 ST300MP0026
ST300MP0096 ST300MP0106 ST300MP0116
ST600MP0006 ST600MP0016 ST600MP0026
ST600MP0036 ST600MP0126 ST600MP0136
ST600MP0146 ST600MP0156 ST900MP0006
ST900MP0016 ST900MP0026 ST900MP0126
ST900MP0136 ST900MP0146 ST900MP0156


Note: the SAS hard drive or SSD does not use the Pin 3 of SATA power connector for PWDIS feature and compatible with MB155SP-B.


While we recommend to avoid using the SATA HDD/SSD with PWDIS, you can use the methods below to disable the PWDIS feature physically if you already purchased the drive:


Method 1 – Using the Molex to SATA adapter or cable to disconnect the power to Pin 3 of the SATA power connector.


Molex to SATA Adapter   Molex to SATA Cable
Molex to SATA Adapter   Molex to SATA Cable


Method 2 – Placing Kapton tape on Pin 1-3 of the SATA power connector to isolate the 3.3V power, as shown below.


Kapton tape SATA power connector


Please contact tech@icydock.com if the problem persists.


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