ASROCK EPC621D6U User manual

EPC621D6U
EPC621D6U-16R
EPC621D6U-2T
EPC621D6U-2T16R
User Manual
Version 1.0
Published March 2019
Copyright©2019 ASRock Rack INC. All rights reserved.

Version 1.0
Published March 2019
Copyright©2019 ASRock Rack 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 ASRock Rack 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 ASRock Rack. ASRock Rack assumes no responsibility
for any errors or omissions that may appear in this documentation.
With respect to the contents of this documentation, ASRock Rack 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 ASRock Rack, 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 ASRock
Rack 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”
ASRock Rack’s Website: www.ASRockRack.com

Contact Information
If you need to contact ASRock Rack or want to know more about ASRock Rack, you’re
welcome to visit ASRock Rack’s website at www.ASRockRack.com; or you may contact
your dealer for further information.
ASRock Rack 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 Package Contents 1
1.2 Specications 2
1.3 Unique Features 6
1.4 Motherboard Layout 7
1.5 Onboard LED Indicators 10
1.6 I/O Panel 12
1.7 Block Diagram 14
Chapter 2 Installation 15
2.1 Screw Holes 15
2.2 Pre-installation Precautions 15
2.3 Installing the CPU and Heatsink 16
2.4 Installation of Memory Modules (DIMM) 20
2.5 Expansion Slots (PCI Express Slots) 21
2.6 Jumper Setup 22
2.7 Onboard Headers and Connectors 25
2.8 Unit Identication purpose LED/Switch 32
2.9 Driver Installation Guide 32
2.10 M.2_SSD (NGFF) Module Installation Guide 33
Chapter 3 UEFI Setup Utility 35
3.1 Introduction 35
3.1.1 UEFI Menu Bar 35
3.1.2 Navigation Keys 36

3.2 Main Screen 37
3.3 Advanced Screen 38
3.3.1 CPU Conguration 39
3.3.2 DRAM Conguration 42
3.3.3 Chipset Conguration 43
3.3.4 Storage Conguration 46
3.3.5 ACPI Conguration 48
3.3.6 USB Conguration 49
3.3.7 Super IO Conguration 50
3.3.8 Serial Port Console Redirection 51
3.3.9 H/W Monitor 54
3.3.10 Runtime Error Logging 56
3.3.11 Intel SPS Conguration 58
3.3.12 Intel®VMD Technology 59
3.3.13 Intel(R) Virtual RAID on CPU 61
3.3.14 Instant Flash 62
3.4 Security 63
3.4.1 Key Management 64
3.5 Boot Screen 67
3.5.1 CSM Parameters 69
3.6 Event Logs 71
3.7 Server Mgmt 73
3.7.1 System Event Log 74
3.7.2 BMC Network Conguration 75

3.8 Exit Screen 77
Chapter 4 Software Support 78
4.1 Install Operating System 78
4.2 Support CD Information 78
4.2.1 Running The Support CD 78
4.2.2 Drivers Menu 78
4.2.3 Utilities Menu 78
4.2.4 Contact Information 78
Chapter 5 Troubleshooting 79
5.1 Troubleshooting Procedures 79
5.2 Technical Support Procedures 81
5.3 Returning Merchandise for Service 81

EPC621D6U Series
PB 1
English
Chapter 1 Introduction
ank you for purchasing ASRock Rack EPC621D6U Series motherboard, a reliable
motherboard produced under ASRock Rack’s consistently stringent quality control.
It delivers excellent performance with robust design conforming to ASRock Rack’s
commitment to quality and endurance.
In this manual, chapter 1 and 2 contains introduction of the motherboard and step-
by-step guide to the hardware installation. Chapter 3 and 4 contains the conguration
guide to BIOS setup and information of the Support CD.
1.1 Package Contents
• ASRock Rack EPC621D6U Series Motherboard
(micro-ATX Form Factor: 9.6-in x 9.6-in, 24.4 cm x 24.4 cm)
• 1 x SATA3 Cable (6G) (60cm)
• 1 x Mini SAS HD to 4 SAS/SATA Cable (12G)
• 1 x Screw for M.2 Socket
• 1 x I/O Shield
• Quick Installation Guide
If any items are missing or appear damaged, contact your authorized dealer.
Because the motherboard specications and the BIOS soware might be updated, the con-
tent of this manual will be subject to change without notice. In case any modications of
this manual occur, the updated version will be available on ASRock Rack website without
further notice. You may nd the latest memory and CPU support lists on ASRock Rack
website as well. ASRock Rack’s Website: www.ASRockRack.com
If you require technical support related to this motherboard, please visit our website for
specic information about the model you are using.
http://www.asrockrack.com/support/

2 3
English
1.2 Specications
EPC621D6U / EPC621D6U-16R / EPC621D6U-2T / EPC621D6U-2T16R
MB Physical Status
Form Factor micro-ATX
Dimension 9.6'' x 9.6'' (24.4 cm x 24.4 cm)
Processor System
CPU Intel® Xeon® Scalable Processors
Socket Single Socket P (3647)
Chipset Intel®C621
System Memory
Capacity - 6 x 288-pin DDR4 DIMM slots
- Support up to 64GB DDR4 RDIMM/LR DIMM/Apache Pass
DIMM
Type - Six Channel DDR4 memory technology
- Support DDR4 2933*/2666/2400/2133 RDIMM/LR DIMM
and Apache Pass DIMM
*DDR4 2933 memory is supported only when using the Intel Cascade Lake
CPU and Intel Cascade Lake BIOS.
DIMM Size Per
DIMM
RDIMM/LR DIMM and Apache Pass DIMM: 64GB,32GB,
16GB, 8GB, 4GB
DIMM
Frequency
RDIMM/LR DIMM and Apache Pass DIMM:
2933*/2666/2400/2133 MHz
*DDR4 2933 memory is supported only when using the Intel Cascade Lake
CPU and Intel Cascade Lake BIOS.
Voltage 1.2V
Expansion Slot
PCIe 3.0 x 16 PCIE6: Gen3 x16 link
PCIE4: Gen3 x16 link*
*EPC621D6U-16R / EPC621D6U-2T16R only:
e SAS_NVMEA0_7 and SAS_NVMEB0_7 are shared with the PCIE4 slot.
When PCIE4 is populated with a PCIE card, SAS_NVMEA0_7 and SAS_
NVMEB0_7 are disabled.
Storage
SATA Controller EPC621D6U / EPC621D6U-2T:
14 x SATA3 6Gb/s (including 1 x SATA DOM port (SSATA_5),
shared with M.2 (PCIE3.0(x4))/ SATA3)), 3 x MiniSAS HD
connectors (SATA_0_3 / SATA_0_7), and 1 x SATA port
(SSATA_4)), support RAID 0, 1, 5, 10
EPC621D6U-16R / EPC621D6U-2T16R:
30 x SATA3 6Gb/s (including 1 x SATA DOM port (SSATA_5),
shared with M.2 (PCIE3.0(x4))/ SATA3)), 7 x MiniSAS HD
connectors (SATA_0_3 / SATA_0_7 / SAS_NVMEA0_7 /
SAS_NVMEB0_7), and 1 x SATA port (SSATA_4)), support
RAID 0, 1, 5, 10

EPC621D6U Series
2 3
English
Additional
Storage
Controller
EPC621D6U / EPC621D6U-2T:
N/A
EPC621D6U-16R / EPC621D6U-2T16R:
LSI3616 (shared with PCIE Slot4)
U.2 from
Slimline
1 (Slimline x8 from CPU1)
Ethernet
Interface EPC621D6U / EPC621D6U-16R:
1000 /100 /10 Mbps
EPC621D6U-2T / EPC621D6U-2T16R:
10000/1000 /100 Mbps
LAN EPC621D6U / EPC621D6U-16R:
- 2 x RJ45 1G base-T by Intel® i350
- 1 x RJ45 Dedicated IPMI LAN port by RTL8211E
EPC621D6U-2T / EPC621D6U-2T16R:
- 2 x RJ45 10G base-T by Intel® X550
- 1 x RJ45 Dedicated IPMI LAN port by RTL8211E
- Supports Wake-On-LAN
- Supports Energy Ecient Ethernet 802.3az
- Supports Dual LAN with Teaming function(TBD)
- Supports PXE
- LAN1 supports NCSI
Management
BMC Controller ASPEED AST2500
IPMI Dedicated
GLAN
1 x Realtek RTL8211E for dedicated management GLAN
Features Watch Dog
NMI
Graphics
Controller ASPEED AST2500
VRAM DDR4 256MB
Rear Panel I/O
VGA Port 1 x D-Sub
UID Button 1
USB 3.0 Port 2
LAN Port - 2 + 1 x RJ45 Gigabit Ethernet LAN port
- LAN Ports with LED (ACT/LINK LED and SPEED LED)
Internal Connector
Auxiliary Panel
Header
1 (includes chassis intrusion, location button & LED, front
LAN LED)
TPM Header 1

4 5
English
IPMB Header 1
Buzzer 1
Fan Header 6 Fans x (6-pin) (CPU/4Front/Rear)
ATX Power 1 (24-pin) + 1 (8-pin)
USB 3.0 Header 1 (supports 2 USB 3.0 ports)
USB 2.0 Header 1 (supports 2 USB 2.0 ports)
Type A USB 3.0 1
SATA DOM 1 (SSATA_5, shared with M.2)
COM Port
Header
1
80 debug port
LED
1
Front Panel 1 (RST, PWRBTN, HDDLED, PWRLED)
Speaker 1 (4pin)
TR1 1
SGPIO 1
Smbus from
BMC
1
PWR_SMB 1
M.2 1 (2230/2242/2260/2280), supports PCIE3.0(X4)/SATA3 (SATA
type is shared with SSATA_5)
NMI Button 1 (Header)
ME/SPS
recovery
1
ClearCMOS 1 (short pin)
OH/FanFail
LED
6 (only Fan Fail LED)
System BIOS
BIOS Type 256Mb AMI UEFI Legal BIOS
BIOS Features - Plug and Play (PnP)
- ACPI 2.0 Compliance Wake Up Events
- SMBIOS 2.8 Support
- ASRock Rack Instant Flash
Hardware Monitor
Temperature - CPU Temperature Sensing
- SystemTemperature Sensing
Fan - CPU/Rear/Front Fan Tachometer
- CPU Quiet Fan (Allow Chassis Fan Speed Auto-Adjust by
CPU Temperature)
- CPU/Rear/Front Fan Multi-Speed Control
Voltage Voltage Monitoring: +12V, +5V, +3.3V, CPU Vcore, DRAM,
1.05V_PCH, +BAT, 3VSB, 5VSB

EPC621D6U Series
4 5
English
is motherboard supports Wake from on Board LAN. To use this function, please make
sure that the “Wake on Magic Packet from power o state” is enabled in Device Manager
> Intel® Ethernet Connection > Power Management. And the “PCI Devices Power On” is
enabled in UEFI SETUP UTILITY > Advanced > ACPI Conguration. Aer that, onboard
LAN1&2 can wake up S5 under OS.
If you install Intel® LAN utility or Marvell SATA utility, this motherboard may fail Win-
dows® Hardware Quality Lab (WHQL) certication tests. If you install the drivers only, it
will pass the WHQL tests.
Support OS
OS Microso® Windows® (Server OS)
- Server 2012 R2 (64 bit)
- Server 2016 (64 bit)
Linux®
- Red Hat Enterprise Linux Server 6.8 ( 64 bit) / 7.4 ( 64 bit)
- CentOs 6.8 ( 64 bit) / 7.4 ( 64 bit)
- SUSE Enterprise Linux Server 11 SP4 ( 64 bit) / 12 SP3 ( 64
bit)
- FreeBSD 11.2 ( 64 bit)
- Ubuntu 16.04 (64 bit) / 15.10 ( 64 bit)
Virtual
- VMWare® ESXi 6.5 u1
- Citrix XenServer 7.5
- Win hyper-V Server 2016
*Please refer to our website for the latest OS support list.
*On Ubuntu 16.04 (64bit) system, Intel Raid mode only supports UEFI BOOT.
*LSI does not support Vmware ESXi 6.5 u1 / Ubuntu 16.04 (64 Bit) / Ubuntu
15.10 (64 Bit) / Citrix XenServer 7.5 OS install.
Environment
Temperature Operation temperature: 10°C ~ 35°C / Non operation
temperature: -40°C ~ 70°C
NOTE: Please refer to our website for the latest specications.

6 7
English
1.3 Unique Features
ASRock Rack Instant Flash is a BIOS ash utility embedded in Flash ROM. is con-
venient BIOS update tool allows you to update system BIOS without entering operat-
ing systems rst like MS-DOS or Windows®. With this utility, you can press the <F6>
key during the POST or the <F2> key to enter into the BIOS setup menu to access
ASRock Rack Instant Flash. Just launch this tool and save the new BIOS le to your
USB ash drive, oppy disk or hard drive, then you can update your BIOS only in a
few clicks without preparing an additional oppy diskette or other complicated ash
utility. Please be noted that the USB ash drive or hard drive must use FAT32/16/12
le system.

EPC621D6U Series
6 7
English
1.4 Motherboard Layout
ATXPWR1
DDR4_B1 (64 bit, 288-pin module, Blue)
DDR4_C1 (64 bit, 288-pin module, Blue)
1
Intel
C621
1
1
1
HDLED RESET
PLED PWRBTN
PANEL1
1
1
AUX_PANEL1
USB3_3_4
SPEAKER1
1
BATTERY1
SSATA_4
TPM1
1
Intel
X550
SSATA_SGPIO
DDR4_F1 (64 bit, 288-pin module, Blue)
DDR4_E1 (64 bit, 288-pin module, Blue)
SSATA_5
1
R1
T
1
NMI_BTN1
BMC_SMB_1
IPMB_1
VGA1
IPMI
LAN
UID1
ATX12V1
BIOS
ROM
CHASSIS_ID0
BMC_DIS1
CHASSIS_ID1
PECI1
J100
9
11
12
13
14
15
17
20
16
24.4 cm (9.6 in)
24.4cm (9.6 in)
USB 3.0
T: USB2
B: USB1
CPU1
LAN1 LAN2
DDR4_A1 (64 bit, 288-pin module, Blue)
DDR4_D1 (64 bit, 288-pin module, Blue)
PSU_SMB1
1
CPU1_FAN1
FRNT_FAN1
FRNT_FAN2
FRNT_FAN3
FRNT_FAN4
1
SATAPWR1
SATA_0_7
SSATA_0_3
BUZZER1
CLRMOS1
USB_1_2
1
1
ME_RECOVERY1
COM1
USB3_5
RAID_1
1
PCIE6
PCIE4
M2_1
NUT30 NUT42 NUT60 NUT80
BMC
ROM
SLIMLIN1
1
1
1
1
11
REAR_FAN1
(RED)
CHASSIS_ID2
123456 78
19
18
22
23
24
25
26
2728293031323334353637383940
42
43
44
45
41
ASPEED
2500
AEP_2
1
AEP_1
1
10
21
LSI 3616
(EPC621D6U-16R /
EPC621D6U-2T16R
only)
/ i350
(EPC621D6U-2T /
EPC621D6U-2T16R)
(EPC621D6U /
EPC621D6U-16R)
SAS_NVMEB0_7
SAS_NVMEA0_7
(EPC621D6U-16R / EPC621D6U-2T16R only)
(EPC621D6U-16R / EPC621D6U-2T16R only)
46
47
1
SAS_CT_1
1
SAS_BP_1
(EPC621D6U-16R /
EPC621D6U-2T16R only)
(EPC621D6U-16R /
EPC621D6U-2T16R only)
48
49
(NCSI)

8 9
English
No. Description
1 Rear Fan Connector (REAR_FAN1)
2 CPU PECI Mode Jumper (PECI1)
3 Descriptor Security Override Jumper (J100)
4 Chassis ID0 Jumper (CHASSIS_ID0)
5 Enable/Disable BMC Jumper (BMC_DIS1)
6 Chassis ID1 Jumper (CHASSIS_ID1)
7 Chassis ID2 Jumper (CHASSIS_ID2)
8PSU SMBus (PSU_SMB1)
9 ATX Power Connector (ATXPWR1)
10 DIMM Mode Jumper (AEP_1)
11 ATX 12V Power Connector (ATX12V1)
12 3 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1, DDR4_C1, Blue)*
13 CPU1 Fan Connector (CPU1_FAN1)
14 LGA 3647 CPU Socket P (CPU1)
15 Front Fan Connector (FRNT_FAN1)
16 Front Fan Connector (FRNT_FAN2)
17 3 x 288-pin DDR4 DIMM Slots (DDR4_D1, DDR4_E1, DDR4_F1, Blue)*
18 Front Fan Connector (FRNT_FAN3)
19 Front Fan Connector (FRNT_FAN4)
20 DIMM Mode Jumper (AEP_2)
21 SATA DOM Power Jumper (SATAPWR1)
22 SATA DOM Connector, Red (SSATA_5)**
23 SATA3 Connector (SSATA_4)**
24 SATA SGPIO Connector (SSATA_SGPIO)
25 Clear CMOS Pad (CLRMOS1)
26 Speaker Header (SPEAKER1)
27 Mini-SAS HD Connector (SATA_0_7)
28 Mini-SAS HD Connector (SSATA_0_3)**
29 USB 3.0 Header (USB3_3_4)
30 USB 2.0 Header (USB_1_2)
31 Vertical Type A USB 3.0 (USB3_5)
32 ME Recovery Jumper (ME_RECOVERY1)
33 ermal Sensor Header (TR1)

EPC621D6U Series
8 9
English
No. Description
34 Virtual RAID On CPU Header (RAID_1)
35 TPM Header (TPM1)
36 System Panel Header (PANEL1)
37 Auxiliary Panel Header (AUX_PANEL1)
38 BMC SMBus Header (BMC_SMB_1)
39 Intelligent Platform Management Bus Header (IPMB_1)
40 Non Maskable Interrupt Button (NMI_BTN1)
41 Serial Port Header (COM1)
42 PCI Express 3.0 Slot (PCIE4)
43 M.2 Slot (M2_1) (Type 2230 / 2242 / 2260 / 2280)
44 PCI Express 3.0 Slot (PCIE6)
45 Slimline for U.2 x8 Connector (SLIMLIN1)
46 Mini-SAS HD Connector (NVME) (SAS_NVMEB0_7)
(EPC621D6U-16R / EPC621D6U-2T16R only)
47 Mini-SAS HD Connector (NVME) (SAS_NVMEA0_7)
(EPC621D6U-16R / EPC621D6U-2T16R only)
48 SATA/SAS and NVMe Mode Selection Jumper (SAS_CT_1)
(EPC621D6U-16R / EPC621D6U-2T16R only)
49 SATA/SAS and NVMe Mode Selection Jumper (SAS_BP_1)
(EPC621D6U-16R / EPC621D6U-2T16R only)
*For DIMM installation and conguration instructions, please see p.20 (Installation of Memory Modules
(DIMM)) for more details.
** e rst “S“ of the “SSATA” means “secondary”. SATA is managed by the rst controller. SSATA is managed by
the secondary controller.

10 11
English
1.5 Onboard LED Indicators
ATXPWR1
DDR4_B1 (64 bit, 288-pin module, Blue)
DDR4_C1 (64 bit, 288-pin module, Blue)
1
Intel
C621
1
1
1
1
1
PCIE6
1
1
DDR4_F1 (64 bit, 288-pin module, Blue)
DDR4_E1 (64 bit, 288-pin module, Blue)
PCIE4
1
1
1
1
1
1
BIOS
ROM
CPU1
DDR4_A1 (64 bit, 288-pin module, Blue)
DDR4_D1 (64 bit, 288-pin module, Blue)
1
CPU1_FAN1
1
1
M2_1
NUT30 NUT42 NUT60 NUT80
BMC
ROM
1
1
REAR_FAN1
FRNT_FAN1
FRNT_FAN2
FRNT_FAN3
FRNT_FAN4
1
2
3
4
5
6
7
8
1
1
1
1
1
LSI 3616
(EPC621D6U-16R /
EPC621D6U-2T16R
only)
9
10
1

EPC621D6U Series
10 11
English
No. Item Status Description
1RFAN_LED1 Amber Rear_FAN1 failed
2CPU_FAN_LED1 Amber CPU1_FAN failed
3FFAN_LED1 Amber FRNT_FAN1 failed
4FFAN_LED2 Amber FRNT_FAN2 failed
5FFAN_LED3 Amber FRNT_FAN3 failed
6FFAN_LED4 Amber FRNT_FAN4 failed
7 SB_PWR1 Green STB PWR ready
8BMC_LED1 Green BMC heartbeat LED
9SAS_SYS_LED1 Green System Heartbeat LED
(EPC621D6U-16R / EPC621D6U-2T16R only)
10 SAS_IOC_LED1 Red IOC Overtemp LED
(EPC621D6U-16R / EPC621D6U-2T16R only)

12 13
English
1.6 I/O Panel
6
14
5
2
3
No. Description No. Description
1 UID Switch (UID) 4 USB 3.0 Ports (USB3_1_2)
2 LAN RJ-45 Port (LAN1)* 5 LAN RJ-45 Port (IPMI_LAN1)*
3 LAN RJ-45 Port (LAN2)* 6 VGA Port (VGA1)
*ere are two LED next to the LAN port. Please refer to the table below for the LAN port
LED indications.
Dedicated IPMI LAN Port LED Indications
Activity / Link LED Speed LED
Status Description Status Description
O No Link O 10M bps connection or no
link
Blinking Yellow Data Activity Yellow 100M bps connection
On Link Green 1Gbps connection
ACT/LINK LED
SPEED LED
LAN Port

EPC621D6U Series
12 13
English
**ere are two LEDs on each LAN port. Please refer to the table below for the LAN port
LED indications.
LAN Port (LAN1, LAN2) LED Indications
EPC621D6U / EPC621D6U-16R:
Activity / Link LED Speed LED
Status Description Status Description
O No Link O 10Mbps connection or
no link
Blinking Yellow Data Activity Yellow 100Mbps connection
On Link Green 1Gbps connection
EPC621D6U-2T / EPC621D6U-2T16R:
Activity / Link LED Speed LED
Status Description Status Description
O No Link O 100Mbps connection or
no link
Blinking Yellow Data Activity Yellow 1Gbps connection
On Link Green 10Gbps connection
ACT/LIN K LE D SPEED LED
LAN Port
ACT/LIN K LE D SPEED LED

14 15
English
1.7 Block Diagram