Rosewill RX251-US User manual

Dual INTERNAL (SATA)/EXTERNAL (USB)
2.5" SATA HDD Enclosure
RX251-US
User’s Manual

Dual INTERNAL (SATA)/EXTERNAL (USB) 2.5" SATA HDD Enclosure RX251-US User Manual
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RX251-US Product Specification
Model RX251-US
Chipset JM20336
Internal Interface 2.5” SATA hard drive
External Interface -Portable Mode : USB2.0
-Mobile Rack Mode : SATA I
Hard Drive Capacity Supported Up to 160GB
Hard Drive size supported 9.5mm (height)
Power Supply -Portable Mode : USB bus power
- Mobile Rack Mode : 4 pin to board
Operating System Supported -Windows 2000/ME/XP/VISTA
-Linux kernel 2.4.1 after
-Mac OS 9.x/10.x and above
Transfer rate -USB2.0 : Up to 480Mbps
-SATA : Up to 1.5 Gps
Size(L x W x H) - External enclosure : 141x73x16mm
- Insertion bay 3.5” : 144x100x24mm

Dual INTERNAL (SATA)/EXTERNAL (USB) 2.5" SATA HDD Enclosure RX251-US User Manual
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RX251-US Introduction
1. The RX251-US is divided into three parts:
A. 3.5” Insertion Bay B. 5.25 Bracket
C. 2.5” SATA HDD Enclosure.

Dual INTERNAL (SATA)/EXTERNAL (USB) 2.5" SATA HDD Enclosure RX251-US User Manual
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2. Accessories
nopq
rst
No. Description
1 Screws for fixing the 5.25” bracket to the PC case.
2 Screws for fixing the 3.5” insertion bay to 5.25” bracket or to a 3.5” drive bay.
3 Screws for fixing a 2.5” SATA hard drive in the 2.5” enclosure.
4 4-Pin power cable to connect to the power supply.
5 SATA cable to connect the 3.5”bay and motherboard.
6 USB 2.0 cable to connect 2.5” enclosure to the computer.
7 USB-Y cable to connect 2.5” enclosure to the computer for providing extra power.

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RX251-US Hardware Installation
The RX251-US can be used as mobile rack function in desktop PC and an external storage. The
detailed installation steps are as below:
A. Install the hard drive in the enclosure
Unscrew the external enclosure by screw driver.
Open the panel of the enclosure and slide the
board out.

Dual INTERNAL (SATA)/EXTERNAL (USB) 2.5" SATA HDD Enclosure RX251-US User Manual
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Connect the 2.5” SATA hard drive to the
connector on the board. Please check the HDD &
board’s pin is match when installation.
Turn over the board and fix the board and hard
drive by screws.
Slide the board with the hard drive back into the
enclosure.
Close the panel and fix it by screws.

Dual INTERNAL (SATA)/EXTERNAL (USB) 2.5" SATA HDD Enclosure RX251-US User Manual
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B. In Desktop PC
There are two ways to use the RX251-US in the desktop PC.
Method 1: Install the RX251-US in the 5.25” drive bay
Slide the 3.5” insertion bay into the
5.25” bracket.
Fasten the 3.5” insertion bay on the
5.25” bracket by screws.

Dual INTERNAL (SATA)/EXTERNAL (USB) 2.5" SATA HDD Enclosure RX251-US User Manual
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Slide the 3.5” insertion bay and 5.25”
bracket into the available 5.25” drive
bay in the PC case.
Fasten the 5.25” bracket in the PC case
by screws n.
n
Connect the one side of the SATA cable
rto the back of the 3.5” insertion bay.
r

Dual INTERNAL (SATA)/EXTERNAL (USB) 2.5" SATA HDD Enclosure RX251-US User Manual
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Connect the other side of the SATA
cable to SATA port on the motherboard.
If your motherboard doesn’t have
on-board SATA port, you may install the
SATA add-on cards and connect the
SATA cable to it.
Connect the 4-pin power cable qto the
back of the 3.5” insertion bay.
q
r
Connect the 4-pin power cable qto the
power supply. Please refer to the
manual of the power supply.
From power supply
q
q

Dual INTERNAL (SATA)/EXTERNAL (USB) 2.5" SATA HDD Enclosure RX251-US User Manual
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Slide the 2.5” enclosure to the 3.5”
insertion bay to the end till the ejection
button is up. Now you can freely access
the hard drive.
When you want to take the enclosure
out, please press the ejection button,
the enclosure will be out.

Dual INTERNAL (SATA)/EXTERNAL (USB) 2.5" SATA HDD Enclosure RX251-US User Manual
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Method 2: Install the RX251-US in the 3.5” drive bay
Slide the 3.5” insertion bay
into the available 3.5” drive
bay.
Fasten the 3.5” insertion bay
in the PC case by screws o.
o

Dual INTERNAL (SATA)/EXTERNAL (USB) 2.5" SATA HDD Enclosure RX251-US User Manual
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Connect the one side of the
SATA cable rto the back of
the 3.5” insertion bay
r
Connect the 4-pin power
cable qto the back of the
3.5” insertion bay.
q
r
Connect the 4-pin power
cable qto the power supply.
Please refer to the manual of
the power supply.
From power supply
q
q
r

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Slide the 2.5” enclosure to
the 3.5” insertion bay to the
end till the ejection button is
up. Now you can freely
access the hard drive.
When you want to take the
enclosure out, please press
the ejection button, the
enclosure will be out.

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C. Portable external storage
Take out the enclosure from
the PC.
Plug the USB cable to the
enclosure.
Connect the USB cable sto
the available port on the
computer.
s

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If the hard drive needs more
power, please connect the
USB-Y cable tto increase
the power efficiency.
t
Connect the USB-Y tcable
to the available USB port on
the computer.
s
t
Thank you for purchasing a quality Rosewill Product.
Please register your product at: www.rosewill.com for complete warranty information and future support for your
product.