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MNL-1638-QRG

Board Layout

SuperServer 2028R-C1R/C1RT Quick Reference Guide

Rear View

CPU Installation 

Front View & Interface

Heatsink Installation 

1. Place heatsink on top of installed CPU

2. Line up the four screws to socket

3. Push down heatsink and screw down as shown 

    (cross pattern, in order: A, C, B, D)

4. NOTE: Only use 6-8 lb/f of torque; otherwise, hand-tighten 

    each screw, to avoid damaging the system

Memory

Caution

Align CPU to socket; 

install CPU straight down

         NOTE: 

Do not bend pin inside socket

!

Screw #B

Screw #D

Screw #A

Screw #C

PCI Expansion Slots

UID Button

VGA Port

LAN 1/2/3/4 Ports

1

2

3

4

Description

No.

USB 0/1/2/3 Ports

Dedicated LAN for IPMI

COM Port

Redundant Power Supply Modules

5

6

7

8

          SAFETY INFORMATION

IMPORTANT: See installation instructions and safety warning 

before  connecting system to power supply.

http://www.supermicro.com/about/policies/safety_information.cfm

          WARNING:

 

To reduce risk of electric shock/damage to equipment, 

disconnect power from server by disconnecting all power 

cords from electrical outlets.

If any CPU socket empty, install protective plastic CPU cap

          CAUTION:

 

Always be sure all power supplies for this system have

the same power output. If mixed power supplies are 

installed, the system will not operate.

For more information go to : 

http://www.supermicro.com/support

!

!

!

Beep Code/LED

Error Message

Description

1 beep

Refresh

Ready to boot

5 short beeps + 1 long beep

Memory error

No memory detected in the system

5 beeps

No Con-In or No Con-

Out devices

Con-In includes USB or PS/2 keyboard, PC or 

Serial Console Redirection, IPMI KVM or SOL.

Con-Out includes Video Controller, PCI or Serial  

Console Redirection, IPMI SOL 

1 beep per device

Refresh

1 beep or each USB device detected

Beep Codes

Hard Drive Signal
Hard Drive Fail
Power Button
Reset Button
Device Activity LED
LAN1 LED
Overheat & Fan Fail LED
Power LED
LAN2 LED
Power Failure LED

1

2

3

4

5

6

7

8

9

10

Description

No.

3

4

5
6

7

2

1

8
9

10

1

3

8

2

4

5

6

7

 HDD0~7

 HDD8~15

ÌMNL-1638-QRG1Î

Processors and their Corresponding Memory Modules

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M

 

M

M

I

D

 

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n

i

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n

o

p

s

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r

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C

#

U

P

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CPU1
CPU2

Processor and Memory Module Population

Number of

CPUs+DIMMs

CPU and Memory Population Confi guration Table

(*For memory to work proper, please install DIMMs in pairs)

1 CPU &

2 DIMMs 

CPU1

P1-A1/P1-B1

1 CPU &

4 DIMMs 

CPU1

P1-A1/P1-B1, P1-C1/P1-D1

1 CPU &

5~8 DIMMs 

CPU1

P1-A1/P1-B1, P1-C1/P1-D1 + Any memory pairs in P1-A2/-B2/-C2/-D2 DIMM slots

2 CPUs &

4 DIMMs 

CPU1 + CPU2

P1-A1/P1-B1, P2-E1/P2-F1

2 CPUs &

6 DIMMs 

CPU1 + CPU2

P1-A1/P1-B1/P1-C1/P1-D1, P2-E1/P2-F1

2 CPUs &

8 DIMMs 

CPU1 + CPU2

P1-A1/P1-B1/P1-C1/P1-D1, P2-E1/P2-F1/P2-G1/P2-H1

2 CPUs &

10~16 DIMMs 

CPU1/CPU2

P1-A1/P1-B1/P1-C1/P1-D1, P2-E1/P2-F1/P2-G1/P2-H1 + Any memory pairs in P1, P2 

DIMM slots

2 CPUs &

16 DIMMs

CPU1/CPU2

P1-A1/P1-B1/P1-C1/P1-D1, P2-E1/P2-F1/P2-G1/P2-H1,P1-A2/P1-B2/P1-C2/P1-D2, 

P2-E2/P2-F2/P2-G2/P2-H2

Type

Ranks Per 

DIMM and 

Data Width

DIMM Capacity 

(GB)

Speed (MT/s); Voltage (V);

Slot Per Channel (SPC) and DIMM Per Channel (DPC)

1 Slot Per 

Channel

2 Slots Per 

Channel

3 Slots Per 

Channel

1DPC

1DPC

2DPC

1DPC

2DPC

3DPC

4Gb 8Gb

1.2V

1.2V

1.2V

1.2V

1.2V

1.2V

SRx4

8GB 16GB

2133

2133

1866

2133

1866

1600

SRx8

4GB 8GB

2133

2133

1866

2133

1866

1600

DRx8

8GB 16GB

2133

2133

1866

2133

1866

1600

DRx4 16GB 32GB

2133

2133

1866

2133

1866

1600

QRx4 32GB 64GB

2133

2133

2133

2133

2133

1600

8Rx4 64GB 128GB

2133

2133

2133

2133

2133

1600

Note:

 For detailed information on memory support and updates, please refer to the SMC Recommended Memory List 

 posted on our website at http://www.supermicro.com/support/resources/mem.cfm.    

DIMM Module Population Confi guration

Note:

 For the memory modules to work properly, please install DIMM modules in pairs 

 (with an even number of DIMMs installed). 

RDIMM
RDIMM
RDIMM
RDIMM
LRDIMM

LRDIMM2DS

DDR4 Memory POR for Haswell-EP

P2-E1

P2-F1

P2-G1

P2-H1

P2-E2

P2-F2

P2-G2

P2-H2

P1-A1

P1-B1

P1-C1

P1-D1

P1-A2

P1-B2

P1-C2

P1-D2

Description

No.

CPU1 Slot1 PCI-E 3.0 x8

CPU1 Slot2 PCI-E 3.0 x8

CPU1 Slot3 PCI-E 3.0 x8

CPU2 Slot4 PCI-E 3.0 x16

CPU2 Slot5 PCI-E 3.0 x8

CPU2 Slot6 PCI-E 3.0 x8

CPU2 Slot7 PCI-E 3.0 x8

DIMME1(Blue)/DIMME2 slot

DIMMF1(Blue)/DIMMF2 slot 

CPU2

DIMMH1(Blue)/DIMMH2 slot

DIMMG1(Blue)/DIMMG2 slot

DIMMA1(Blue)/DIMMA2 slot

DIMMB1(Blue)/DIMMB2 slot

CPU1 (Install CPU1 first)

DIMMD1(Blue)/DIMMD2 slot

DIMMC1(Blue)/DIMMC2 slot

SAS 0~3 & SAS 4~7: SAS 3.0 connections supported by the LSI 3108 controlller

(S)SATA 0~3: SATA 3.0 supported by Intel SCU (S-SATA 0~3)

JBT1: Clear CMOS

(I-)SATA 4~5: SATA 3.0 supported by Intel PCH (I-SATA 4~5)

(I-)SATA 0~3: SATA 3.0 supported by Intel PCH (I-SATA 0~3)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

I-SA
TA5

I-SA
TA4

I-SA
TA0

I-SA
TA1

I-SA
TA2

I-SA
TA3

I-SGPIO2

S-SA
TA

JS39

USB0/1

FAN5

FANB

FANA

FAN3

FAN2

FAN1

JBT1

LEDM1

SP1

JPG1

JBR1

JPME2

JWD1

JTPM1

USB2/3

BIOS

BT1

JD1

JF1

JPWR2

JPWR1

USB4/5

USB6

USB7/8

(3.0)

(3.0)

CPU1 SLOT1 PCI-E 3.0 X8

SAS4-7

COM2

CPU1 SLOT2 PCI-E 3.0 X8

CPU1 SLOT3 PCI-E 3.0 X8

CPU2 SLOT4 PCI-E 3.0 X16

CPU2 SLOT5 PCI-E 3.0 X8

CPU2 SLOT6 PCI-E 3.0 X8

P1 DIMMC1 P1 DIMMC2

P2 DIMME1

P1 DIMMD1

P2 DIMME2

P1 DIMMD2

P2 DIMMF2

P2 DIMMF1

CPU1

P1 DIMMB2

P2 DIMMH2

P1 DIMMA2

P1 DIMMB1

P2 DIMMH1

P1 DIMMA1

P2 DIMMG2 P2 DIMMG1

LAN2 LAN1

(3.0)

IPMI_LAN

PWR I2C

CPU2 SLOT7 PCI-E 3.0 X8

FAN4

X10DRH-C/i(T)

JPL1

CPU2

SAS0-3

LSI 3108

SAS CTRL

PCH

BMC

CLOSE 1st

OPEN 1st

CLOSE 1st

OPEN 1st

Battery

LAN CTRL

1

2

3

4

5

6

7 8

17

16

15

18

19

19

22

21

I-SGPIO1

(2.0)

10

11 12

9

14 13

20

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