ASROCK Rack 2U4FH-8L User manual

Version 1.0
Published November 2015
Copyright©2015 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
Warning
When removal of the chassis lid required for servicing:
- Turn o power and unplug any power cords/cables, and
- Reinstall the chassis lid before restoring power.
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.)

Contents
Chapter 1 Introduction 1
1.1 Shipping Box Contents 1
1.2 Specications 3
Chapter 2 Server System Overview 4
2.1 System Components 4
2.2 Internal Features 5
2.3 System Front Panel 7
2.4 System Rear Panel 7
2.5 Front Control Panel Buttons and LEDs 8
2.6 PSU LED 9
2.7 3.5-inch Hard Drive Tray LEDs 10
Chapter 3 Hardware Installation and Maintenance 11
3.1 Server Top Cover 12
3.2 Hard Drive 16
3.3 Power Supply 20
3.4 Add-In Card 22
3.5 System Fan 27
3.7 Server Board 28
3.8Chassis Cables 29

6 1
Chapter 4 Backplane Specications 32
4.1 Hard Drive Backplanes (BPB) 32
4.2 Front Panel Board (FPB) 33
4.3 Power Distribution Board (PDB-D) 33
4.4 PCIE SSD Add-In Card (PE-SSD) (Optional) 34
4.4 Pin Denitions 35

2U4FH-8L
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Chapter 1 Introduction
ank you for purchasing 2U4FH-8L, 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. 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
2. e illustrations shown in this manual are examples only, the actual system may dier
slightly .

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Item Quantity
2U4FH-8L Barebone (2U form factor) 1
System Boards (MB) 1
Power Supply Units 2
System Fans 4
HDD Backplane (BPB) 1
Front Panel Board (FPB) 1
Power Distribution Boards (PDB) 4
Power Cable, ATX 8Pin, PDB to MB, 200mm 1
Power Cable, ATX 8Pin, PDB to MB, 700mm 1
Power Cable, ATX 24Pin, PDB to MB, 520mm 1
Power Cable, ATX 12Pin to 4*4Pin, PDB to BPB 1
PMBus Cable, 1*5Pin, PDB to MB, 500mm 1
Front Panel Cable, 2*10Pin to 2*10Pin+1*5Pin, FPB to MB, 700mm 1
USB 2.0 Cable, FPB to MB, 2*5PIN, 1250mm 1
VGA Cable, 2*8Pin, 850mm 1
BPB Cable, MiniSAS HD to 8087(L/A), 650mm 1
BPB Cable, MiniSAS HD to 8087(R/A), 650mm 1
SMBus Cable, 1*5Pin, PDB to MB, 650mm 1
SSD Cables, SFF 8639 to MiniSAS HD+1*4HSG, 650mm 2
SSD Cables, SFF 8639 to MiniSAS HD+1*4HSG, 800mm 1
2.5" SSD Cable, SATA 7+15 to 7Pin+1*4Pin, 800&120mm 2
Accessory Box 1
Support CD 1
User Manual 1
Quick Installation Guide 1
Note: Type and quantity of the cables vary depending on the server board that comes with your system.
If any items are missing or appear damaged, contact your authorized dealer.
1.1 Shipping Box Contents

2U4FH-8L
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1.2 Specications
2U4FH-8L
System
Form Factor 2U Rackmount
Chassis Model 2U4FH-8L
Dimensions 28.1” x 17.6” x 3.4” (715 mm x 448 mm x 86 mm)
(L/W/H, w/o ear)
Support MB EEB, 12''x13''
Front Panel
Buttons • Power Button
• UID Button
LEDs • POWER LED
• UID LED
• System Alert LED
• HDD LED
I/O Ports • 2 x USB 2.0 ports
• VGA port
External Drive Bay
Front Side Drive Bay 8 Bay 3.5'' SATA HDD (6Gb/s)
Front Side Backplane backplane with 8 SATA ports
Internal Side Drive Bay 4 Bay 2.5'' PCIE SSD
Power Supply
Type 2U, Redundant
Output Watts 750W
System Fan
Fan 8038 mm Fan x4
Riser Card Support
Riser card Type 2 x Symmetry Riser card(X8/x8) support 4 x Full High
PCIE card
Other
Support MB FH-C612NM (SSI EEB, 12'' x 13'')
*Please be noted that the functions are supported depending on the type of the server board.

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Chapter 2 Server System Overview
is chapter provides diagrams showing the location of important components of
the server system.
2.1 System Components
2 x Power Supply Units
8 x 3.5” HDD Carriers
4 x 2.5” PCIE SSD Carriers
4 x System Fans
1 x VGA Port
Top Covers
Server Board
Riser Card Assembly
Front Controls and Indicators

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2.2 Internal Features
1
2
5
6
7
89
34
12
13 14 15
11
10
16
17 18
19

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No. Item
1 Server Board (SB)
2 Riser Card Assembly
3Add-in Card Slots: 2 x PCIE Add-in Cards (on the riser card assembly)*
Mezzanine Slot: 1 x Storage Mezzanine Card (on the server board)**
4Add-in Card Slots: 2 x PCIE Add-in Cards (on the riser card assembly)*
Mezzanine Slot: 1 x LAN Mezzanine Card (on the server board)**
5 Power Supply Unit (PSU2)
6 Power Supply Unit (PSU1)
7 4 x Power Distribution Boards (PDB)
8 System Fan (FAN1)
9 System Fan (FAN2)
10 System Fan (FAN3)
11 System Fan (FAN4)
12 HDD Backplane Board (BPB)
13 2.5” SSD Carrier (SSD0)
14 2.5” SSD Carrier (SSD1)
15 2.5” SSD Carrier (SSD2)
16 2.5” SSD Carrier (SSD3)
17 Front Panel Board (FPB)
18 VGA Port
19 8 x 3.5'' Hot-Swap HDD Trays (HDD0~HDD7)
*Supports Low prole and FHHL (Full High Half Length) PCIe cards
**Supports 1GbE x 2, 10GbE x2 or SFP+ (Fiber) mezzaine cards (M350R/M540R/M599R/M599RS)

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2.3 System Front Panel
14
3
HDD4 HDD5 HDD6 HDD7
HDD0 HDD1 HDD2 HDD3
2
No. Description
1 Control Panel Buttons and LEDs
2 2 x USB 2.0 Ports
3 8 x 3.5" Hot-Swap HDD Trays (HDD0~HDD7)
4VGA Port
2.4 System Rear Panel
5
21
Redundant PSU 1+1:
Only one PSU is allowed to be
removed while the server is running.
3 4 6
No. Description
1 2 x Power Supply Units (Redundant PSU 1+1)
*Server requires 1 working PSU, with 1 redundant PSU. You must have at least one active
supply, installed, functioning and connected to AC. Only one of the PSUs is allowed to be
removed while the server is running.
2 I/O Shield (depends on the specication of the server board)*
3 2 x PCI Express Slots (on the riser card assembly)
*Supports Low prole and FHHL (Full High Half Length) PCIe cards
4 1 x LAN Mezzanine Card Slot
*Support for 1GbE x 2, 10GbE x2 or SFP+ (Fiber) x2
5 2 x PCI Express Slots (on the riser card assembly)
*Supports Low prole and FHHL (Full High Half Length) PCIe cards
6Rea r Vent *
*e locations of I/O shield and rear vent may vary depending on the system and server board models.

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2.5 Front Control Panel Buttons and LEDs
Front Control Panel
UID
USB2
12
USB1
2
6
5
3
4
1
7
No. Description
1 LAN1, LAN2 Activity LED*
2System Health LED*
3 USB 2.0 Port (USB1)
4 USB 2.0 Port (USB2)
5 Power Button and LED
6 UID Button and LED*
7VGA Port
*Please be noted that the functions are supported depending on the type of the motherboard.
UID Button
Press the UID button to toggle the front panel UID LED and the baseboard UID LED on
and o. You are able to locate the server you’re working on from behind a rack of servers.
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.
Status LED Denitions
Power LED
Status Description
Green Power on
O Power o

2U4FH-8L
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UID LED
Status Description
Blue System identication is active.
O System identication is disabled.
System Health LED
Status Description
Solid Red ere is a fault in the system.
O System is normally operating.
LAN1, LAN2 LED
Status Description
Blinking Green Network access
Solid Green MEZZ LAN1/LAN2 is present.
O No MEZZ LAN1/LAN2 is present.
2.6 PSU LED
Power LED
Power LED
PSU Status LED
Status Description
Green Normal work; output ON and OK
Amber Module fault/protection in operating mode
(failure, OCP, OVP, Fan Fail, OTP, UVP)
AC cord unplugged

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2.7 3.5-inch Hard Drive Tray 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

2U4FH-8L
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Chapter 3 Hardware Installation and
Maintenance
is chapter helps you assemble the chassis and install components.
Before You Begin
Before you work with the server, pay close attention to the “Important Safety Instructions”
at the beginning of this manual.
1. Make sure the server is powered o.
Power down the server if it is still running.
(1) Press the Power button to power o the server from full-power mode to standby-
power (sleep) mode. e Power LED at the front turns from solid green to blinking
green.
(2) Disconnect the power cord rst from the AC outlet and then from the server.
e power LED turns o.
2. Ensure you have a clean and stable working environment. Avoid dust and dirt because
contaminants may cause malfunctions.
3. Ground yourself properly before touching any system component. A discharge of static
electricity may damage components. Wear a grounded wrist strap if available.
Installing Procedures
e followings are prerequisite to be installed.
• 3.5" HDD(s) or or 2.5" SSD(s)
• Power Supplies (Pre-installed)
• Server Board (Pre-installed)
• Front Panel Board (Pre-installed)
• HDD Backplanes (Pre-installed)
• Power Distribution Boards (Pre-installed)
• Fans (Pre-installed)
Up to four add-in cards are optional to be installed when you have a riser board installed
on your server board.
e server is not completely powered down when you press the Power button on the front
panel. e Power button lets the server toggle between Power On and Standby (Sleep)
modes. Some internal circuitry remain active in the Standby mode. To remove all power
from the system completely, be sure to disconnect the power cord from the server.
1. Some components are already pre-installed. Simply properly connect the relavant cables
before or aer installation. See the Quick Installation Guide for more details.
2. Refer to the user manual of the server board you use for instructions on how to install
server board components.

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3.1 Server Top Cover
Removing the Server Top Covers
2
1
1
1
1
1
1. Remove the screws that secure the top rear cover to the chassis.
2. Push the top rear cover toward the rear of the chassis to remove the cover from the
locked position. Li up and remove the top rear 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.

2U4FH-8L
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3. When the top rear cover has been removed, you can also remove the top front cover.
Remove the two screws on both sides that secure the front top cover to the chassis.
4. Push the front top cover toward the rear side to remove the cover from the locked
position. Li up and remove the front top cover.
4
3
3

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Installing the Server Top Cover
1. Lower the top front cover on the chassis, making sure the side latches align with the
cutouts. Slide the top front cover toward the front.
2. Secure the front top cover with the two screws.
1
2
2