Star Lake SK518 User manual

User’s Manual
Revision Date: Jan 18 2024
SK518
COH-HPC Server Size D Carrier Board with PCIe/104,
Slim-SAS Express Expansions Extreme temperature
-40°C to 85°C

SK518 User’s Manual
Revision Date: Jan 18 2024
1
Safety Information
Electrical safety
To prevent electrical shock hazard, disconnect the power cable from the electrical outlet
before relocating the system.
When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
Make sure that your power supply is set to the correct voltage in your area.
If you are not sure about the voltage of the electrical outlet you are using, contact your
local power company.
If the power supply is broken, do not try to fix it by yourself. Contact a qualified service
technician or your local distributor.
Operation safety
Before installing the motherboard and adding devices on it, carefully read all the
manuals that came with the package.
Before using the product, make sure all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.
Place the product on a stable surface.
If you encounter any technical problems with the product, contact your local distributor.
Statement
All rights reserved. No part of this publication may be reproduced in any form or by any
means, without prior written permission from the publisher.
All trademarks are the properties of the respective owners.
All product specifications are subject to change without prior notice.

SK518 User’s Manual
Revision Date: Jan 18 2024
2
Revision History
Revision
Date (yyyy/mm/dd)
Changes
V1.0
2024.1.18
Initial Release

SK518 User’s Manual
Revision Date: Jan 18 2024
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Table of Contents
Safety Information .................................................................................................................................... 1
Electrical safety ...................................................................................................................................... 1
Operation safety..................................................................................................................................... 1
Statement............................................................................................................................................... 1
Revision History........................................................................................................................................ 2
Chapter 1: Product Information................................................................................................................ 5
1.1 Key Feature...................................................................................................................................... 5
1.2 Board Diagram.................................................................................................................................. 7
1.3 Dimension......................................................................................................................................... 8
1.4 Appearance...................................................................................................................................... 8
Chapter 2: Jumper and Connector setting .............................................................................................. 9
2.1 List of Jumpers / Internal Function Connector & Socket ................................................................... 9
2.2 Jumper Setting.................................................................................................................................10
Clear CMOS.........................................................................................................................................10
JP1 : COM1 Pin 9 Function Select : 1A ................................................................................................10
JP2 : COM2 Pin 9 Function Select : 1A ................................................................................................10
JP3,JP4 : COM1,2 Function Select : RS232/422/485............................................................................10
2.3 Connetor Pin Assignment.................................................................................................................11
DC_IN : DC Input Power Connector (12V/20A).....................................................................................11
USB1,2 : 2 Port USB3.0 Type-A Connector..........................................................................................11
10GSFP1,2 : 2 Port 10G SFP+ LAN Connector(Type 1).......................................................................11
LAN1 : 2 Port GbE RJ-45 Connector....................................................................................................12
VGA1 : Slim D-SUB 15 Pin VGA Connector..........................................................................................12
CPU Module Connector........................................................................................................................13
M2P1,2 : M.2 M-key Socket 2280 for SSD............................................................................................13

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MPCIE1: Mini PCIe Socket...................................................................................................................13
SIM1: 6 pin SIM Socket........................................................................................................................13
SATA1,2 : 7 Pin DIP SATA Connector..................................................................................................14
SATA_PWR1,2 : 4 Pin SATA Power Connector....................................................................................14
SAS1,2 : Slim SAS(x4) PCIe Gen4 Extension Connector......................................................................14
SAS3,4 : Slim SAS(x8) PCIe Gen4 Extension Connector......................................................................15
COM1,2 : RS232/422/485 Serial Port Connector..................................................................................16
DIO1: Digital I/O (3.3V Level) Connector ..............................................................................................16
eSPI1 : eSPI Connector.....................................................................................................................17
JUSB1 : 2 Port USB 2.0 Internal Connector..........................................................................................17
FP1 : Front Panel Pin Header(SMD 2.0mm).........................................................................................17
FAN1,2 : CPU/System FAN Connector.................................................................................................18
SMB1 : SMBus Link(2.0mm Box Header).............................................................................................18
SMB2 : For Debug Card(2.0mm Box Header).......................................................................................18
PCIe104 : PCIe104 Type2 Connector...................................................................................................18
BAT1 : CMOS 3.3V Battery Input(1.25mm BOX header).......................................................................19
Function LED.......................................................................................................................................19

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Chapter 1: Product Information
1.1 Key Feature
System
CPU
Ampere Altra : Up to 80 Arm-based cores at 175W TDP
Intel ICE-Lake HCC : Up to 20 cores at 118W TDP
Memory type
DDR4 R-DIMMs up to 768GB
Chipset
On CPU Module
Storage
SlimSAS/M.2/SATA interface
Watchdog
On CPU module :
1-255 sec. or 1-255 min. software programmable and can be generate
system reset.
Expansion
PCIe/104(Type2)
1(2*PCIe Gen3 x 4/4*PCIexGen3 x 1/2*SATA)
Slim-SAS (Vertical)
2(PCIe Gen4 x 8)
Slim-SAS (Vertical)
2(PCIe Gen4 x 4)
MiniPCIe(Full Size)
1(PCIe Gen3 x 1)
M.2
2(M.2 2280 M-Key)(PCIe Gen4 x 4)
Display
Chipset
On CPU Module / AST2510
VGA
1
Ethernet
Chipset
1 x Intel® I210iT
1 x C827
IPMI
AST2500 by request
External I/O
VGA
1
USB3.0
4
10GbE
4
GbE
2
MXM FAN
1 x MXM FAN
Battery
1 x Battery Header
Internal I/O
USB2.0
2(Header)

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DIDO
1(4in/4out)
SATAIII
2
SATA Power
2
Serial
2 (RS232)
SM BUS/I2C BUS
1
LPC
1
System Fan
1
CPU Fan
1
Front Panel Control
1
Power Connector
1(2 x 4-pin terminal block)
Mechanical and Environment
Form Factor
COM-HPC Carrier Server Size D
Power Type
DC-IN 12V
Dimension
350mm x 210mm
Operating
Temperature
-40 to 85℃
Storage Temperature
-40 to 85℃
Relative humidity
10% to 90%, non-condensing
Standard Compliance
Standard Compliance
CE/FCC
OS
OS
On CPU Module
*All specifications and photos are subject to change without notice.

SK518 User’s Manual
Revision Date: Jan 18 2024
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1.2 Board Diagram

SK518 User’s Manual
Revision Date: Jan 18 2024
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1.3 Dimension
1.4 Appearance

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Revision Date: Jan 18 2024
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Chapter 2: Jumper and Connector setting
2.1 List of Jumpers / Internal Function Connector & Socket

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Revision Date: Jan 18 2024
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2.2 Jumper Setting
Clear CMOS
Function
Setting
Default
1-2
Clear CMOS
2-3
JP1 : COM1 Pin 9 Function Select : 1A
Function
Setting
5V
1-2
12V
2-3
NC
Open
JP2 : COM2 Pin 9 Function Select : 1A
Function
Setting
5V
1-2
12V
2-3
NC
Open
JP3,JP4 : COM1,2 Function Select : RS232/422/485
Function
Setting
RS232
1-3,4-6
RS422
1-3,2-4
RS485
3-5,2-4

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2.3 Connetor Pin Assignment
DC_IN : DC Input Power Connector (12V/20A)
Pin
Signal
Pin
Signal
1
GND
2
GND
3
GND
4
GND
5
+12VSB
6
+12VSB
7
+12VSB
8
+12VSB
USB1,2 : 2 Port USB3.0 Type-A Connector
Pin
Signal Follow Standard
10GSFP1,2 : 2 Port 10G SFP+ LAN Connector(Type 1)
Pin
Signal Follow Standard
(Non LED)

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LAN1 : 2 Port GbE RJ-45 Connector
Pin
Signal Follow Standard
P.S.: LAN LED Define:
Yellow : Active
1000M : Orange
100M : Green
VGA1 : Slim D-SUB 15 Pin VGA Connector
Pin
Signal Follow Standard

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CPU Module Connector
Pin
Signal Follow Standard
M2P1,2 : M.2 M-key Socket 2280 for SSD
Pin
Signal Follow Standard
MPCIE1: Mini PCIe Socket
Pin
Signal Follow Standard
SIM1: 6 pin SIM Socket
Pin
Signal Follow Standard

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SATA1,2 : 7 Pin DIP SATA Connector
Pin
Signal Follow Standard
SATA_PWR1,2 : 4 Pin SATA Power Connector
Pin
Signal
1
12V/1A
2
GND
3
GND
4
5V/1A
SAS1,2 : Slim SAS(x4) PCIe Gen4 Extension Connector
Pin
Signal
Pin
Signal
A1
GND
B1
GND
A2
PERp0
B2
PETp0
A3
PERn0
B3
PETn0
A4
GND
B4
GND
A5
PERp1
B5
PETp1
A6
PERn1
B6
PETn1
A7
GND
B7
GND
A8
BP_TYPE(VSP)
B8
2W-CLK
A9
CWAKE#,OBFF(VSP)
B9
2W-DATA
A10
GND
B10
GND
A11
REFCLK+(VSP+)
B11
PERST#(VSP)
A12
REFCLK-(VSP-)
B12
CPRSNT#(VSP)
A13
GND
B13
GND
A14
PERp2
B14
PETp2
A15
PERn2
B15
PETn2
A16
GND
B16
GND

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A17
PERp3
B17
PETp3
A18
PERn3
B18
PETn3
A19
GND
B19
GND
SAS3,4 : Slim SAS(x8) PCIe Gen4 Extension Connector
Pin
Signal
Pin
Signal
A1
GND
B1
GND
A2
PERp0
B2
PETp0
A3
PERn0
B3
PETn0
A4
GND
B4
GND
A5
PERp1
B5
PETp1
A6
PERn1
B6
PETn1
A7
GND
B7
GND
A8
BP_TYPEA(VSP)
B8
SMCLK
A9
WAKE#
B9
SMDAT
A10
GND
B10
GND
A11
REFCLK1A+
B11
PERST#
A12
REFCLK1A-
B12
CPRSNT1A#
A13
GND
B13
GND
A14
PERp2
B14
PETp2
A15
PERn2
B15
PETn2
A16
GND
B16
GND
A17
PERp3
B17
PETp3
A18
PERn3
B18
PETn3
A19
GND
B19
GND
A20
PERp4
B20
PETp4
A21
PERn4
B21
PETn4
A22
GND
B22
GND
A23
PERp5
B23
PETp5
A24
PERn5
B24
PETn5
A25
GND
B25
GND
A26
BP_TYPEB(VSP)
B26
SMCLK
A27
WAKE#
B27
SMDAT
A28
GND
B28
GND
A29
REFCLK1B+
B29
PERST#
A30
REFCLK1B-
B30
CPRSNT1B#
A31
GND
B31
GND

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A32
PERp6
B32
PETp6
A33
PERn6
B33
PETn6
A34
GND
B34
GND
A35
PERp7
B35
PETp7
A36
PERn7
B36
PETn7
A37
GND
B37
GND
COM1,2 : RS232/422/485 Serial Port Connector
Pin
Signal(RS232)
Signal(RS422)
Signal(RS485)
1
5V/1A
5V/1A
5V/1A
2
GND
GND
GND
3
P9SEL/1A
P9SEL/1A
P9SEL/1A
4
N.C.
RX-
CTS
5
CTS
N.C.
N.C.
6
TXD
RX+
N.C.
7
RTS
N.C.
N.C.
8
RXD
TX+
Data+
9
N.C.
N.C.
N.C.
10
N.C.
TX-
Data-
DIO1: Digital I/O (3.3V Level) Connector
Pin
Signal
Pin
Signal
1
DI1
2
DI2
3
DI3
4
DI4
5
DO1
6
DO2
7
DO3
8
DO4
9
3.3V/1A
10
GND
Pin 1
Pin 1

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eSPI1 : eSPI Connector
Pin
Signal
Pin
Signal
1
ESPI_ALERT
2
ESPI_CS0
3
ESPI_IO0
4
ESPI_IO1
5
ESPI_IO2
6
ESPI_IO3
7
ESPI_RST
8
ESPI_CLK.
9
1.8V/0.3A
10
GND
JUSB1 : 2 Port USB 2.0 Internal Connector
Pin
Signal
Pin
Signal
1
USB_VCC
2
USB_N1
3
USB_P1
4
GND
5
GND
6
USB_VCC
7
USB_N2
8
USB_P2
9
GND
10
GND
FP1 : Front Panel Pin Header(SMD 2.0mm)
Pin
Signal
Pin
Signal
1
HDD_LED+
2
PW_LED+
3
HDD_LED-
4
GND
5
GND
6
PANSWIN#(Non USE)
7
RESET#
8
GND
9
NC
10
NC
Pin 1
Pin 1

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FAN1,2 : CPU/System FAN Connector
Pin
Signal
1
FAN_PWM
2
FAN_IO
3
12V/1A
4
GND
SMB1 : SMBus Link(2.0mm Box Header)
Pin
Signal
1
3.3V/1A
2
SMB_DATA
3
SMB_CLK
4
GND
SMB2 : For Debug Card(2.0mm Box Header)
Pin
Signal
1
3.3V/1A
2
SMB_DATA
3
SMB_CLK
4
GND
PCIe104 : PCIe104 Type2 Connector
Pin
Signal Follow Standard

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BAT1 : CMOS 3.3V Battery Input(1.25mm BOX header)
Pin
Signal
1
GND
2
3.3V
Function LED
LED
Function
1
Input Power LED
2
3.3V LED
3
5V LED