ASROCK Rack E3C246D2I User manual

E3C246D2I
E3C242D2I
C246 WSI
User Manual
Version 1.0
Published January 2019
Copyright©2019 ASRock Rack INC. All rights reserved.

Version 1.0
Published January 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.)
e terms HDMI®and HDMI High-Denition Multimedia Interface, and the HDMI
logo are trademarks or registered trademarks of HDMI Licensing LLC in the United
States and other countries.

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 11
1.6 I/O Panel 12
1.7 Block Diagram 14
Chapter 2 Installation 16
2.1 Screw Holes 16
2.2 Pre-installation Precautions 16
2.3 Installing the CPU 17
2.4 Installing the CPU Fan and Heatsink 19
2.5 Installation of Memory Modules (DIMM) 20
2.6 Expansion Slot (PCI Express Slot) 21
2.7 Jumper Setup 22
2.8 Onboard Headers and Connectors 24
2.9 Unit Identication purpose LED/Switch 29
2.10 Driver Installation Guide 29
2.11 Dual LAN and Teaming Operation Guide 30
2.12 M.2_SSD (NGFF) Module Installation Guide (M2_1) 31
Chapter 3 UEFI Setup Utility 32
3.1 Introduction 32

3.1.1 UEFI Menu Bar 32
3.1.2 Navigation Keys 33
3.2 Main Screen 34
3.3 Advanced Screen 35
3.3.1 CPU Conguration 36
3.3.2 DRAM Conguration 39
3.3.3 Chipset Conguration 40
3.3.4 Storage Conguration 43
3.3.5 ACPI Conguration 44
3.3.6 USB Conguration 45
3.3.7 Super IO Conguration 46
3.3.8 Serial Port Console Redirection 48
3.3.9 H/W Monitor 52
3.3.10 Runtime Error Logging 54
3.3.11 Intel SPS Conguration (E3C246D2I / E3C242D2I only) / Server ME
Conguration (C246 WSI only) 56
3.3.12 Intel(R) Bios Guard Technology 57
3.3.13 Instant Flash 58
3.4 Server Mgmt (E3C246D2I / E3C242D2I only) 59
3.4.1 System Event Log 60
3.4.2 BMC Network Conguration 61
3.5 Security 63
3.5.1 Key Management 64
3.6 Boot Screen 68
3.6.1 CSM Parameters 70

3.7 Event Logs 72
3.8 Exit Screen 73
Chapter 4 Software Support 74
4.1 Install Operating System 74
4.2 Support CD Information 74
4.2.1 Running The Support CD 74
4.2.2 Drivers Menu 74
4.2.3 Utilities Menu 74
4.2.4 Contact Information 74
Chapter 5 Troubleshooting 75
5.1 Troubleshooting Procedures 75
5.2 Technical Support Procedures 77
5.3 Returning Merchandise for Service 77

E3C246D2I / E3C242D2I / C246 WSI
PB 1
English
Chapter 1 Introduction
ank you for purchasing ASRock Rack E3C246D2I / E3C242D2I / C246 WSI
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 E3C246D2I / E3C242D2I / C246 WSI Motherboard
(Mini ITX Form Factor: 6.7-in x 6.7-in, 17.02 cm x17.02 cm)
• Support CD (C246 WSI only)
• Quick Installation Guide
• 1 x SATA3 Cable (60cm)
• 1 x SATA Power Cable (80cm)
• 1 x ATX 4P to 24P Power Cable
• 1 x I/O Shield
• 1 x Screw for M.2 Socket
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
E3C246D2I / E3C242D2I / C246 WSI
MB Physical Status
Form Factor Mini ITX
Dimension 6.7'' x 6.7'' (17.02cm x17.02 cm)
Processor System
CPU Supports Intel® Xeon® E-2100 Processors
Chipset Intel® C246 / C242
System Memory
Capacity 2 x DDR4 DIMM slots
Type - Dual Channel memory technology
- Supports DDR4 2133/2400/2666 ECC UDIMM*
*e non-ECC UDIMMs support Client OS only.
DIMM Size Per
DIMM
ECC and non-ECC UDIMM : 16GB, 8GB, 4GB
Voltage 1.2V
Expansion Slot
PCIe 3.0 x16 1 slot
Storage
SATA
Controller
C246: 1x OCULINK (SATA_0,1,2,3) , 4x SATA3 6Gb/s
(SATA_4,5,6,7)
C242: 1x OCULINK (SATA_0,1,2,3), 2x SATA3 6Gb/s
(SATA_4,5)
*Please contact sales to buy the OCuLink to 4x SATA cable.
NVMe Devices C246 WSI / E3C246D2I: NVMe SSDs PCIEx4 (Share with
SATA_0,1,2,3)
E3C242D2I: N/A
M.2 - 1 x M.2 (NGFF 2242, PCI-E Gen3 x4 link or SATA signal)*
*SATA 1 will be disabled when M.2 is SATA signal.
Audio
Audio Codec E3C246D2I / E3C242D2I : N/A
C246 WSI : Realtek ALC892
Ethernet
Interface 1000 /100 /10 Mbps
LAN -2 x RJ45 GLAN by Intel® i210+Intel® i219LM
- Supports Wake-On-LAN
- Supports Energy Ecient Ethernet 802.3az
- Supports PXE
Graphics
Controller E3C246D2I / E3C242D2I: ASPEED AST2500
C246 WSI: CPU pGFX
VRAM E3C246D2I / E3C242D2I: DDR4 16MB
C246 WSI: N/A

E3C246D2I / E3C242D2I / C246 WSI
2 3
English
Rear Panel I/O
VGA Port 1 x D-Sub
USB 2.0 Port 2
USB 3.1 Port E3C242D2I: 2 (Gen2), 2(Gen1)
E3C246D2I / C246 WSI: 4 (Gen2)
LAN Port - RJ45: 2x GLAN(by Intel® i210+ Intel® i219LM)
- LAN Ports with LED (ACT/LINK LED and SPEED LED)
Management
LAN Port
E3C246D2I / E3C242D2I : 1
C246 WSI : N/A
Display Port E3C246D2I / E3C242D2I : N/A
C246 WSI : 1
HDMI Port E3C246D2I / E3C242D2I : N/A
C246 WSI : 1
Audio E3C246D2I / E3C242D2I : N/A
C246 WSI : 3 Jack
SPDIF E3C246D2I / E3C242D2I : N/A
C246 WSI : 1
UID E3C246D2I / E3C242D2I : 1
C246 WSI : N/A
Internal Connector
Auxiliary Panel
Header
1 (includes chassis intrusion, front LAN LED)
TR1 1
TPM Header 1
Fan Header 3 (1CPU/1Front/1Rear)
ATX power DC-
IN
1x (8-pin)
SATA Port 3
SATADOM 1
ATX Power 1x (4-pin)
SATA Power 1x (4-pin)
OCuLink 1
USB 3.0 Header 1 (supports 2 USB3.0)
ClearCMOS 1 (short pad)
SGPIO 2
Front Panel 1
Audio E3C246D2I / E3C242D2I : N/A
C246 WSI : 1
Speaker 1
COM Header 1
IPMB E3C246D2I / E3C242D2I : 1
C246 WSI : N/A
PWR SMB E3C246D2I / E3C242D2I : 1
C246 WSI : N/A

4 5
English
System BIOS
BIOS Type 128Mb AMI UEFI Legal BIOS
BIOS Features - Plug and Play (PnP)
- ACPI 2.0 Compliance Wake Up Events
- SMBIOS 2.8.0 Support
- ASRock Rack Instant Flash
Hardware Monitor
Temperature - CPU/PCH/DDR/LAN/Storage Temperature Sensing
- MB/Card side/TR1 Temperature 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 E3C246D2I / E3C242D2I:
Voltage Monitoring: +12V, +5V, +3.3V, CPU Vcore, DRAM,
1.05V_PCH, +BAT, 3VSB, 5VSB
C246 WSI :
Voltage Monitoring: 3V, Vcore, 12V, VCCST_SFR, 3VSB
Support OS
OS E3C246D2I and E3C242D2I:
Microso® Windows®
- Server 2016 (64 bit)
- Server 2019 (64 bit)
Linux®
- RedHat Enterprise Linux Server 6.10 (64 bit) / 7.5 (64 bit)
- SUSE Enterprise Linux Server 11 SP4 (64 bit) / 12 SP3 (64 bit)
- Ubuntu 16.04 (64 bit)/ 18.04 (64 bit)
Virtual
- VMWare® ESXi 6.5 u1
- Win hyper-V Server 2016
C246 WSI:
Microso® Windows®:
Windows 10 (64 bit)
Linux®
- RedHat Enterprise Linux Server 6.10 (64 bit) / 7.5 (64 bit)
- SUSE Enterprise Linux Server 11 SP4 (64 bit) / 12 SP3 (64 bit)
- Ubuntu 16.04 (64 bit)/ 18.04 (64 bit)
Virtual
- VMWare® ESXi 6.5 u1
- Win hyper-V Server 2016
* Please refer to our website for the latest OS support list.

E3C246D2I / E3C242D2I / C246 WSI
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.
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.

E3C246D2I / E3C242D2I / C246 WSI
6 7
English
1.4 Motherboard Layout
E3C246D2I / E3C242D2I
DDR4_B (64 bit, 288-pin module)
DDR4_A (64 bit, 288-pin module)
PCIE7
BIOS
ROM
17.0cm (6.7 in)
17.0cm (6.7 in)
SATA_PWR1
VGA1
3
RoHS
LAN1
USB 3.1
T: USB_1
B: USB_2
USB 2.0
T: USB_1
B: USB_2
1
USB3_1_2
1
SATA_ 5
23
SATA_SGPIO1
E3C246D2I E3C242D2I/
LAN2
USB 3.1
T: USB_3
B: USB_4
PANEL1
HDLED RESET
PLED PWRBTN
1
SATA_4
32
CLRMOS1
4
ATX12V2
ATX_4PIN
Super
I/O
Intel
C246/
C242
COM1
1
OCU1
FAN2
FAN1
1
OCU_SEL
C 1
M2_1
T
1
SATAPWR1
SPEAKER1
ITX_AUX_PANEL1
1
CMOS
Battery
1
SATA_SGPIO2
1
FAN3
BMC
12
16
15
14
13
9
10
12
11
7
8
SATA_ 6
SATA_ 7
5
6
28
31
25 17
18
1
PECI1
OCU_SEL
CHASSIS_ID1
CHASSIS_ID0
29
30
24 21
TPM1
1
T 1
R
1
1
1
PWM_CFG1
SEC_OR1
2019
22
1
PSU_SMB1
IPMB1
1
2627
UID
IPMI_LAN

8 9
English
No. Description
1 ATX 12V Power Connector (ATX12V2)
2 ATX 4PIN Power Connector (ATX_4PIN)
3 2 x 288-pin DDR4 DIMM Slots (DDR4_A, DDR4_B)
4 Clear CMOS Pad (CLRMOS1)
5 OCuLink x4 Connector (OCU1)
6 SATA3 Connector (SATA_6) (for E3C246D2I only)
7 SATA3 Connector (SATA_7) (for E3C246D2I only)
8 USB 3.0 Header (USB3_1_2)
9 SATA SGPIO Connector (SATA_SGPIO2)
10 Front Fan Connector (FAN2)
11 Rear Fan Connector (FAN3)
12 SATA3 Connector (SATA_4)
13 SATA Power Connector (SATA_PWR1)
14 SATA DOM Power Jumper (SATAPWR1)
15 System Panel Header (PANEL1)
16 Auxiliary Panel Header (ITX_AUX_PANEL1)
17 Speaker Header (SPEAKER1)
18 CPU PECI Mode Jumper (PECI1)
19 PWM Conguration Header (PWM_CFG1)
20 ermal Sensor Header (TR1)
21 Security Override Jumper (SEC_OR1)
22 TPM Header (TPM1)
23 PSU SMBus (PSU_SMB1)
24 Intelligent Platform Management Bus header (IPMB1)
25 CPU Fan Connector (FAN1)
26 SATA SGPIO Connector (SATA_SGPIO1)
27 SATA3 Connector (SATA_5)
28 OCuLink SATA/PCIE Interface Selection Jumper (OCU_SEL)
29 Chassis ID Jumper (CHASSIS_ID1)
30 Chassis ID Jumper (CHASSIS_ID0)
31 M.2 Socket (M2_1) (Type 2242)
32 COM Port Header (COM1)

E3C246D2I / E3C242D2I / C246 WSI
8 9
English
C246 WSI
DDR4_B (64 bit, 288-pin module)
DDR4_A (64 bit, 288-pin module)
PCIE7
BIOS
ROM
17.0cm (6.7 in)
17.0cm (6.7 in)
SATA_PWR1
VGA1
3
21
RoHS
LAN1
USB 3.1
T: USB_1
B: USB_2
USB 2.0
T: USB_1
B: USB_2
1
USB3_1_2
1
TPM1
1
SATA_ 5
23
SATA_SGPIO1
C246 WSI
LAN2
USB 3.1
T: USB_3
B: USB_4
HDMI1 Display1
PANEL1
HDLED RESET
PLED PWRBTN
1
SATA_4
27
CLRMOS1
4
Top:
LINE I N
Center:
FRONT
Bottom:
MIC IN
Optical
SPDIF
22
1
HD_AUDIO1
ATX12V2
ATX_4PIN
Super
I/O
Intel
C246
COM1
1
OCU1
FAN2
FAN1
1
T 1
R
OCU_SEL
C 1
M2_1
T
1
SATAPWR1
SPEAKER1
ITX_AUX_PANEL1
1
CMOS
Battery
1
SATA_SGPIO2
1
FAN3
1
1
1
PWM_CFG1
SEC_OR1
12
16
20
15
14
13
9
10
12
11
7
8
SATA_ 6
SATA_ 7
5
6
19
25
26
28
24 1718

10 11
English
No. Description
1 ATX 12V Power Connector (ATX12V2)
2 ATX 4PIN Power Connector (ATX_4PIN)
3 2 x 288-pin DDR4 DIMM Slots (DDR4_A, DDR4_B)
4 Clear CMOS Pad (CLRMOS1)
5 OCuLink x4 Connector (OCU1)
6 SATA3 Connector (SATA_6)
7 SATA3 Connector (SATA_7)
8 USB 3.0 Header (USB3_1_2)
9 SATA SGPIO Connector (SATA_SGPIO2)
10 Front Fan Connector (FAN2)
11 Rear Fan Connector (FAN3)
12 SATA3 Connector (SATA_4)
13 SATA Power Connector (SATA_PWR1)
14 SATA DOM Power Jumper (SATAPWR1)
15 System Panel Header (PANEL1)
16 Auxiliary Panel Header (ITX_AUX_PANEL1)
17 Speaker Header (SPEAKER1)
18 PWM Conguration Header (PWM_CFG1)
19 ermal Sensor Header (TR1)
20 Security Override Jumper (SEC_OR1)
21 TPM Header (TPM1)
22 CPU Fan Connector (FAN1)
23 SATA SGPIO Connector (SATA_SGPIO1)
24 SATA3 Connector (SATA_5)
25 OCuLink SATA/PCIE Interface Selection Jumper (OCU_SEL)
26 M.2 Socket (M2_1) (Type 2242)
27 COM Port Header (COM1)
28 Front Panel Audio Header (HD_AUDIO1)

E3C246D2I / E3C242D2I / C246 WSI
10 11
English
1.5 Onboard LED Indicators
DDR4_B (64 bit, 288-pin module)
DDR4_A (64 bit, 288-pin module)
PCIE7
RoHS
1
1
1
E3C246D2I
HDLED RESET
PLED PWRBTN
1
6
1
Super
I/O
Intel
C246
1
1
1
11
1
1
1
1
1
2
3
4
UID
5
No. Item Status Description
1 SB_PWR1 Green STB PWR ready
2FAN_LED2 Red FAN2 failed
3FAN_LED3 Red FAN3 failed
4FAN_LED1 Red FAN1 failed
5UID_LED1 Blue
Unit Identication LED*
*Please see 2.9 “Unit Identication purpose LED/
Switch” for more information.
6BMC_LED1 Green BMC heartbeat LED

12 13
English
1.6 I/O Panel
E3C246D2I / E3C242D2I
2
17
3
4
5
6
8
No. Description No. Description
1VGA Port (VGA1) 5 USB 3.1 Gen2 Ports (USB31_3_4)
2 LAN RJ-45 Port (LAN1)** 6 LAN RJ-45 Port (IPMI_LAN)*
3
E3C246D2I:
USB 3.1 Gen2 Ports (USB31_1_2)
E3C242D2I:
USB 3.1 Gen1 Ports (USB31_1_2)
7 USB 2.0 Ports (USB_1_2)
4 LAN RJ-45 Port (LAN2)** 8 UID Switch (UID1)
C246 WSI
5
4
311
6
7
8 10
9
2
1
12
No. Description No. Description
1 Line In (Light Blue) 7 LAN RJ-45 Port (LAN2)**
2 Front Speaker (Lime) 8 USB 3.1 Gen2 Ports (USB31_3_4)
3Microphone (Pink) 9Display Port
4VGA Port (VGA1) 10 HDMI Port
5 LAN RJ-45 Port (LAN1)** 11 USB 2.0 Ports (USB_1_2)
6 USB 3.1 Gen2 Ports (USB31_1_2) 12 Optical SPDIF Out Port (SPDIF1)

E3C246D2I / E3C242D2I / C246 WSI
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LAN Port LED Indications
*ere are two LEDs on each 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 10Mbps connection or
no link
Blinking Yellow Data Activity Yellow 100Mbps connection
On Link Green 1Gbps connection
**ere are two LEDs on each LAN port. Please refer to the table below for the LAN port
LED indications.
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
ACT/LINK LED
SPEED LED
LAN Port

14 15
English
1.7 Block Diagram
E3C246D2I / E3C242D2I
INTEL
Coff ee Lak e -S CPU
LGA-1151 Pin
Soc ket
PCI-E x16 S LOT
SLOT 7Channel A
S CPU
Channel B
DDR4 2133/2400/2667
DDR4 2133/2400/2667
DMI 3.0
INTEL
C246
Cannon Lake
PCH-H
USB 3.0 5Gb/s
USB 3.1 Gen1 SuperSpeed USB
2 fron t port s
US B 3.1 10Gb/s
US B 3.1 Gen2 S uperSpeed USB 4
r e a r p o rt s t yp e A
HS IO 4-5
HSIO 0-3
M.2_1 (PCI-E/S AT A )
S AT A 3 6Gb/s S AT A _5 S ATA _6 S AT A _7
HS IO 14-17
HSIO 22
HSIO 23-25
PCI-Ex1 100MHz
INTEL I 210
(LAN1 NCSI)
PCI-Ex1 100MHz
INTEL I 219LM
(LAN2)
SPI
SPI FLASH
SYSTEM BIOS
HSIO 7
HS IO 10
SIO
NCT5567D-B
22
17
S AT A / PCI -E
S AT A _4 (S ATA D O M)
USB 2.0 480 Mb/s
USB 2.0 High-Speed USB
2 r e a r p o rt s
Oculink
(It is on ly left with SATA[0], S ATA [2],
S AT A [3] if use M .2 S AT A )
HS IO 18-21
BMC
AST2500
(HSI O 15)
RGB
TPM-S
H ea der
DDR4
256MB
PWM
RTL 8211ERGMIIMNG RJ45
IPMB
CPU FAN1
FRNT FAN1
REA R F AN 1
Re ar VGA
port
AUX panel
panel
I2C
E3C246D2I
21
PCIE 3.0 x4 or SATA 3.0 x4
E3C24 2 D2I do not support
SATA[6], SATA[7] por t s
E3C24 2 D2I o nl y su pp ort 2x US B 3.1
Gen2 rear ports type A, and 2x US B 3.1
Gen1 rear ports type A