ASROCK Barebone 2U12L6SW User manual

2U12L6SW
User Manual
Industry Standard, Flexible Architecture
OPEN
Less Heat, Less Power Consumption
GREEN
Robust Design, Quality Parts
STABLE
Barebone
Stable and
Reliable Solution

Version 1.0
Published September 2013
Copyright©2013 ASRockRack Inc. All rights reserved.
Copyright Notice:
No part of this documentation may be reproduced, transcribed, transmitted, or
translated in any language, in any form or by any means, except duplication of
documentation by the purchaser for backup purpose, without written consent of
ASRockRack Inc.
Products and corporate names appearing in this documentation may or may not
be registered trademarks or copyrights of their respective companies, and are used
only for identication or explanation and to the owners’ benet, without intent to
infringe.
Disclaimer:
Specications and information contained in this documentation are furnished
for informational use only and subject to change without notice, and should
not be constructed as a commitment by ASRockRack. ASRockRack assumes no
responsibility for any errors or omissions that may appear in this documentation.
With respect to the contents of this documentation, ASRockRack does not provide
warranty of any kind, either expressed or implied, including but not limited to
the implied warranties or conditions of merchantability or tness for a particular
purpose.
In no event shall ASRockRack, its directors, ocers, employees, or agents be liable
for any indirect, special, incidental, or consequential damages (including damages
for loss of prots, loss of business, loss of data, interruption of business and the
like), even if ASRockRack has been advised of the possibility of such damages
arising from any defect or error in the documentation or product.
is device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
CALIFORNIA, USA ONLY
e Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance
controlled in Perchlorate Best Management Practices (BMP) regulations passed by the
California Legislature. When you discard the Lithium battery in California, USA, please
follow the related regulations in advance.
“Perchlorate Material-special handling may apply, see www.dtsc.ca.gov/hazardouswaste/
perchlorate”
ASRockRack’s Website: www.ASRockRack.com

Setting up the Server in a Restricted Access Location
• Access can only be gained by service persons or by users who have been instructed
about the reasons for the restrictions applied to the location and about any precautions
that shall be taken.
• Access is through the use of a tool or lock and key, or other means of security, and is
controlled by the authority responsible for the location.
• Leave enough clearance (25 inches in the front and 30 inches in the back of the rack) to
allow the front door to be opened completely and to allow for sucient airow.
• is product is for installation merely in a Restricted Access Location.
• is product is not suitable for use with visual display work place devices according to §2
of the the German Ordinance for Work with Visual Display Units.
Replaceable batteries
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS

Important Safety Instructions
Pay close attention to the following safety instructions before performing any of
the operation. Basic safety precautions should be followed to protect yourself from
harm and the product from damage:
• Operation of the product should be carried out by suitably trained, qualied, and
certied personnel only to avoid risk of injury from electrical shock or energy hazard.
• Disconnect the power cord from the wall outlet when installing or removing main
system components, such as the motherboard and power supply unit.
• Place the system on a stable and at surface.
• Use extreme caution when working with high-voltage components.
• When handling parts, use a grounded wrist strap designed to prevent static discharge.
• Keep the area around the system clean and clutter-free.
• Keep all components and printed circuit boards (PCBs) in their antistatic bags when
not in use.
• Handle a board by its edges only; do not touch its components, peripheral chips,
memory modules or contacts.

Contact Information
If you need to contact ASRockRack or want to know more about ASRockRack,
you’re welcome to visit ASRockRack’s website at www.ASRockRack.com; or you
may contact your dealer for further information.
ASRockRack Incorporation
6F., No.37, Sec. 2, Jhongyang S. Rd., Beitou District,
Taipei City 112, Taiwan (R.O.C.)

6 1
Contents
Chapter 1 Introduction 1
1.1 Package Contents 1
Chapter 2 Chassis Overview 2
2.1 System Components 2
2.2 System Front View 3
2.3 System Rear View 4
2.4 Front Control Panel Buttons and LEDs 5
2.5 PSU Panel Button and LEDs 7
2.6 HDD Tray Panel LEDs 8
Chapter 3 Hardware Installation and Maintenance 9
3.1 Chassis Cover 9
3.2 Hard Drives 11
3.3 System Fan 14
3.4 Power Supply 15
3.5 Backplanes 17
3.6 Add-on Card 20
3.7 Chassis Cables 21
Chapter 4 Backplane Specications 23
Appendix A Rails Installation 30
Chapter 1 Introduction
ank you for purchasing 2U12L6SW, a reliable barebone system produced
under ASRockRack’s consistently stringent quality control. It delivers excellent
performance with robust design conforming to ASRockRack’s commitment to
quality and endurance.
1.1 Package Contents
• 2U12L6SW (2U Form Factor)
• Power Supply Unit (pre-installed)
• System Fan (pre-installed)
• HDD Backplanes x 3 (pre-installed)
• Chassis Cables
• Screws x 72 (includes 24ea SFF and 48ea LFF)
• User Manual
• Support CD

2U12L6SW
6 1
English
Chapter 1 Introduction
ank you for purchasing 2U12L6SW, a reliable barebone system produced
under ASRockRack’s consistently stringent quality control. It delivers excellent
performance with robust design conforming to ASRockRack’s commitment to
quality and endurance.
1.1 Package Contents
• 2U12L6SW (2U Form Factor)
• Power Supply Unit (pre-installed)
• System Fan (pre-installed)
• HDD Backplanes x 3 (pre-installed)
• Chassis Cables
• Screws x 72 (includes 24ea SFF and 48ea LFF)
• User Manual
• Support CD
Because the hardware specications might be updated, the content of this documentation
will be subject to change without notice. In case any modications of this documentation
occur, the updated version will be available on ASRockRack’s website without further
notice. If you require technical support related to this product, please visit our website for
specic information about the model you are using.
ASRockRack’s Website: www.ASRockRack.com
e illustrations shown in this manual are examples only, the actual system may dier
slightly .
If any items are missing or appear damaged, contact your authorized dealer.

2 3
English
Chapter 2 Chassis Overview
is chapter provides diagrams showing the location of important components of
the server chassis.
2.1 System Components
M/B
Max. PWM Fan (4 pcs)
Front Controls and Indicators
Rear Top Cover
Front Top Cover
D Carriers12 x 3.5” Hot-Swap HD
Middle Top Cover

2U12L6SW
2 3
English
2.2 System Front View
21 3
No. Description
1 Control Panel Buttons and LEDs
2 12 x 3.5" Hot-Swap HDD Carriers
3 USB 2.0 Port

4 5
English
2.3 System Rear View
5
31 2 4
No. Description
1 Power Supply Units
2 4 x 2.5" Hot-Swap HDD Carriers
3 3 x Low Prole PCI Express Slots
4 2 x 2.5" Hot-Swap HDD Carriers
5 I/O Shield (depends on the specication of the motherboard)

2U12L6SW
4 5
English
2.4 Front Control Panel Buttons and LEDs
1
2
3
4
5
8
9
6
7
No. Description
1 Power Button and LED
2 LAN1 Activity LED
3 LAN3 Activity LED*
4 NMI (Nonmaskable Interrupt) Button*
5 ID Button and LED
6 LAN2 Activity LED
7 LAN4 Activity LED*
8 System Status LED*
9 Reset Button
*Please be noted that the functions are supported depending on the type of the motherboard.
Power Button
Press the power switch button to toggle the system power on and standby/sleep modes.
To remove all power from the system completely, disconnect the power cord from the
server.
NMI (Nonmaskable Interrupt) Button
Press the NMI button with a paper clip or pin to generate a nonmaskable interrupt and to
put the server in a halt state for examination.
ID Button
Press the ID button to toggle the front panel ID LED and the baseboard ID LED on and
o. You are able to locate the server you’re working on from behind a rack of servers.
System Reset Button
When the system is completely unresponsive, press the system reset button to reboot the
server without shutting it o and initialize the system.

6 7
English
Status LED Denitions
Power LED
Status Description
Blue Power on
Blinking Blue Standby(Sleep) mode
O Power o
LAN1, LAN2,LAN3, LAN4 LEDs
Status Description
Yellow Link between system and network or no access
Blinking Yellow Network access
ID LED
Status Description
Blue System identication is active.
O System identication is disabled.
System Status LED
Status Description
O Running or normal operation
Yellow At least one sensor has critical alert

2U12L6SW
6 7
English
2.5 PSU Panel Button and LEDs
AC
DC
AC
DC
!
1
3
5
4
2
No. Description
1 Buzzer Mute Button
2 Power Supply Status LED
3AC LED
4 DC LED
5Fail/Warning LED
Buzzer Mute Button
Press the red Buzzer Mute button to stop the buzzer from making a sound and reset the
buzzer alarm. Alarm buzzer beeps when any of the power modules fails.
Status LED Denitions
Power Supply LED
Status Description
Green AC present / only standby output on
Power supply DC output ON and OK
Amber PDB (Power Distribution Board) failure
Single module failure
O No AC to all PSU
AC LED
Status Description
Green AC present / only standby output on / CR-State
Flashing Green
(1Hz)
No AC power to this PSU
O No AC power to all PSU

8 PB
English
AC and DC LEDs
Status Description
Green Power supply DC output ON and OK
Fail/Warning LED
Status Description
Amber Power supply failure
Flashing Amber
(1Hz)
Power supply warning
2.6 HDD Tray Panel LEDs
1
2
No. Description
1 HDD Power LED
2 HDD Activity LED
Status LED Denitions
HDD Power LED
Status Description
Blue HDD powered-on
O No power to HDD
HDD Activity LED
Status Description
Solid Green HDD active
Blinking Green HDD accessing or reading
Red HDD failed
O HDD powered-o

2U12L6SW
PB 9
English
Chapter 3 Hardware Installation and
Maintenance
is chapter helps you assemble the chassis and install components.
3.1 Chassis Cover
Removing the Chassis Cover
1
1
3
3
1
1
1
4
6
2
1. Remove the ve screws that secure the top covers to the chassis.
2. Li up and remove the middle top cover.
3. Remove the two screws on both sides that secure the rear top cover to the chassis
4. Push the rear section of the top cover toward the rear of the chassis to remove the cover
from the locked position.
Li up and remove the rear top cover.
1. Before removing the top cover, power o the server and unplug the power cord.
2. e system must be operated with the chassis top cover installed to ensure proper cooling.

10 11
English
Installing the Chassis Cover
4
4
4
4
4
1
6
3
2
2
1. Lower the rear top cover on the chassis, making sure the side latches align with the
cutouts.
Slide the rear top cover toward the front until the cover locks into place.
2. Secure the rear top cover with the two screws.
3. Lower the middle top cover onto the chassis.
4. Secure the top covers with the ve screws.

2U12L6SW
10 11
English
3.2 Hard Drives
e 2U12L6SW chassis supports hot-swappable hard drives.
Removing HDD Carriers from the Chassis
1. Press the locking lever latch on the HDD carrier to unlock the retention lever.
2. Rotate the lever out and away from the module bay and pull the hard drive out of the
HDD carrier.
1
2

12 13
English
Installing a 3.5-inch Hard Drive to the HDD Carrier
1. Place the HDD into the HDD carrier with the printed circuit board side facing down.
Carefully align the mounting holes in the hard drive and the HDD carrier.
2. Secure the hard drive using the four screws.
3. Slide the HDD carrier into the HDD bay until the drive is fully seated.
4. Push in the locking lever to lock the HDD carrier into place.
1 2
3
4

2U12L6SW
12 13
English
Installing a 2.5-inch Hard Drive to the HDD Carrier
1. Place the HDD into the HDD carrier with the printed circuit board side facing down.
Carefully align the mounting holes in the hard drive and the HDD carrier.
2. Secure the hard drive using the four screws.
3. Slide the HDD carrier into the HDD bay until the drive is fully seated.
4. Push in the locking lever to lock the HDD carrier into place.
4
3
1
2

14 15
English
3.3 System Fan
Replacing the System Fan
1. Unplug the fan connecter and remove the failed fan.
2. Align the mounting holes on the replacement fan corners with the fan mounts on the
fan bracket.
3. Gently place the fan onto the mounts with fan's power cord facing right, when you are
facing the front of the server. Make sure the fan is well seated.
4. Connect the end of the fan cable to the fan connector.
Mounting Hole
Fan Mount
Before replacing the system fan, power o the server and unplug the power cord.