1www.dfi.com

DT122-GH Installation Guide

Panel

Front View

Rear View

AC Socket

Power LED (green)

Reset Button

Power ButtonHDD LED(red)

Line-inLine-outMic-in

USB 3.0_2 USB 2.0_2USB 3.0_1 USB 2.0_1

DP++_0 DP++_2DP++_1 DP++_3

LAN 1 LAN 2 COM 1COM 2

Note:

DFI reserves the right to change the specifications at any time prior to the product's release. For the latest revision of product documentation, please contact your sales representative.

2

The system can accommodate one 3.5" HDD or two HDDs. 1. To install a 2.5" HDD, use

the 2.5" HDD bracket as shown on the right.

Installing a 2.5" or 3.5" SATA DriveInstalling a 2.5" SATA Drive Mounting Screws

Removing the Chassis Cover1. Make sure the system and all other peripheral devices connected to it have been

powered-off.2. Disconnect all power cords and cables.3. The 4 mounting screws on the left and right sides of the system are used to

secure the cover to the chassis. Remove these screws and put them in a safe place for later use.

Installing a SODIMMThe system can accommodate two DDR4 memory modules (dual channel).

SO_DIMM1(closer to the center of

the board)SO_DIMM2

Installing an M.2 CardThe onboard M.2 Type 2280 connector (M Key) supports PCIe NVMe modules up to PCIe Gen 3.0 x4 bandwidth.

SATA Drive

HDD Bracket

Mounting Screw

3

2. Place the HDD bracket with the installed SATA drives back in the chassis and use the provided mounting screws to attach the HDD bracket to the drive bay.

Mounting Screw

Drive Bay

Mounting Screws

Installing a 3.5" SATA Drive

spacer

Drive bayspacer

1. Insert spacers into the anti-shock bumpers of the HDD bracket. You will find the spacers in the HDD drive bay kit.

To install a 3.5" HDD, please directly mount the HDD on the drive bay as shown on the right.

Mounting Screws

Drive Bay

Mounting Screw

2. Align the mounting holes on the SATA drive with the mounting holes on the drive bay, and then use the provided mounting screws to install the SATA drive on the drive bay.

3. Place the drive bay back in the chassis and install the drive bay with 4 mounting screws.

Mounting Screw Mounting Screw

4

Board Layout and Jumper Settings

DD

R4_

2 SO

DIM

M

DD

R4_

1 SO

DIM

M

COM 2 RS232/422/485 Select (JP2, JP3, JP4)1

29

COM 3~610

2

9

10

1

FrontAudio

(JP4)

(JP2)

(JP3)

USB 3

1 4

COM 1 (Top)COM 2 (Bottom)

PCIe 1 (PCIe x16)

M.2 M Key (2280/2242)

4-pin Vertical Type

34-pin Right Angle Type (opt.)

5 6

1 2

SATAStandard/Power

Select (JP5)

SATA 0

1

SATA 1

1

1

4

SATA 0Power

1

4

SATA 1Power

2 1

6 5

COM 2 RS232/Power Select (JP1)

2 1

6 5

2 1

6 5

2 1

6 5

TPM

CPU Fan

Standby LED

DP++ 0 (Top)DP++ 1 (Bottom)

DP++ 2 (Top)DP++ 3 (Bottom)

LAN 1USB 2 (Top)USB 1 (Bottom)USB 3.0

Buzzer

Battery

1Clear CMOS (JP6)

AMD Ryzen

V1000Series/R1000Series

RealtekAudioCodec

Chassis Intrusion1

System Fan

1

1

1Auto Power-on Select (JP7)

12

12

Front Panel

11

NuvotonNCT6116D

LAN 2USB 2 (Top)USB 1 (Bottom)USB 2.0

Line-inLine-outMic-in

1210 10

9

10

9 1210

S/PDIF1

SPI Flash BIOS

USB 3.0 (for V1000)

USB 2.0

SATA 3.0

SATA 3.0

USB 2.0 (for R1000)

TM

USB 3-4

USB 1-2

DC-in Jack (opt.)

1

2

3

4

COM 2 RS232/Power Select JP1

RS232 (default) 1-3 (RI-), 2-4 (DCD-) On

RS232 with power 3-5 (+5V), 4-6 (+12V) On

COM 2 RS232/422/485 Select JP2 JP3/JP4

RS232 (default) 1-2 On 1-3, 2-4 On

RS422 Full Duplex 3-4 On 3-5, 4-6 On

RS485 5-6 On 3-5, 4-6 On

SATA Standard/Power Select JP5

Standard (default) 1-3, 2-4 On

SATA with pin 7 VCC (+5V) 3-5 (SATA 0), 4-6 (SATA 1) On

Clear CMOS JP6

Normal (default) 1-2 On

Clear CMOS 2-3 On

COM 1: RS232COM 2: RS232 with power/RS422/RS485

6 7 8 9

1 2 3 4 5

DCD

(o

r +

12V)

RXD

TXD

DTR

GN

D

DSR

RTS

CTS

RI(o

r +

5V)

DAT

A+D

ATA-

N.C

.N

.C.

GN

D

2 4 531

76 8 9

N.C

.N

.C.

N.C

.N

.C.

RS422

N.C

.N

.C.

N.C

.N

.C.

2 4 531

76 8 9

RXD

+RX

D-

TXD

+TX

D-

GN

D

RS232

933-DT1222-000GEVT

A54801917May 23, 2019

RS485

COM 3~6: RS232

910

GND

RXD5TXD3

21

TXD4

RXD3 TXD5

TXD6

RXD6

GND

RXD4Auto Power-on Select JP7

Power-on via AC power (default) 1-2 On

Power-on via power button 2-3 On