DFI EC70A-TGU User manual

1
www.dfi.com
Package Contents
• 1 EC70A-TGU system unit
• Remote switch cable (100cm)
• Mounting screws for M.2 module
• Rubber foot screws
• Grounding screw
Quick Installation Guide
EC70A-TGU
© May 09, 2023 DFI Inc.

2Quick Installation Guide | EC70A-TGU
Product Overview
Front View
1
2
3
4
5
6
Power Button (w/status LED)
HDD LED
VGA
COM 1 (RS232*/RS422/RS485)
COM 2 (RS232*/RS422/RS485)
COM 4 (RS232)
7
Antenna Hole
8
Reset Button
1
2
3456
7
8
*Default

3
Rear View
9
10
11
DC-in (9V ~36V)
LAN 1 ~ 2
COM 3 (RS232*/8-bit DIO)
9
10
11
13
12
14
14
LAN 4
12
13
LAN 3
USB 3.1
HDMI 1 ~ 2
15
12
13
10
11
915
9
10
13
915
15
SKU 1
SKU 2
SKU 3
10 11
*Default

4
Quick Installation Guide |
Please read and follow the instructions below to open the system.
1. Make sure the system and all other peripheral devices connected to it have been
powered o.
2. Disconnect all power cords and cables.
Step 1:
The 2 screws on the bottom of the system are used to secure the bottom cover to the chassis.
Remove the screws and put them in a safe place for later use. Lift the bottom cover upward to
open the system.
Step 2:
The heat shield can be easily accessed after the chassis cover is removed.
LED Indication
1
2
HDD LED
LED Behavior Status
Blink Disk access activity
O HDD present or HDD not present
2
Removing the Chassis Cover
1
Status LED
Suspend Mode LED Behavior
S0 Always ON
S1 Quick Blink
(cycle 1 sec)
S3 Slow Blink
(cycle>1 sec)
S4, S5 O

5
Installing the SO-DIMM Module
Before installing the memory module, please read and follow the safety cautions below.
1.Make sure the PC and all other peripheral devices connected to it has been powered down.
2.Disconnect all power cords and cables.
3.Locate the SO-DIMM socket on the system board.
4.Make sure the notch on memory card is aligned to the key on the socket.
Step 1:
Remove the 4 screws of the heat shield and put them in a safe place for later use.
Remove the heat shield and the SO-DIMM socket is readily accessible.
Step 2:
Insert the memory card into the slot while making sure 1) the notch and the key are aligned,
and 2) the non-connector end rises approximately 45 degrees horizontally. Press the card rmly
into the socket while applying and maintaining even pressure on both ends.
Notch
Retention Notch
Key
Socket Top View
DDR3 SO-DIMM
Retention Clip
45°
Step 2

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Quick Installation Guide | EC70A-TGU
Step 3
Step 4
Step 3:
Press the end of the card far from the socket down while making sure the retention notch and
the clip align as indicated by the dotted line in the illustration. If the retention notch and the clip
do not align, please remove the card and re-insert it. Press the card all the way down.
Step 4:
The clips snap automatically and abruptly to the retention notches of the card sounding a
distinctive click, and lock the card in place. Inspect that the clip sits in the notch. If not, please
pull the clips outward, release and remove the card, and mount it again.

7
COM 3 Jumper Setting
A
JP9
Pin Assignment Pin Assignment
1-2
RS232 (default)
2-3
DIO
4-5 5-6
7-8 8-9
10-11 11-12
B
JP8
Pin Assignment Pin Assignment
1-2
RS232 (default)
2-3
DIO
4-5 5-6
7-8 8-9
10-11 11-12
A
B
1
Remove the 4 screws of the heat shield and put them in a safe place for later use.
Remove the heat shield and the COM 3 jumper is readily accessible.
Heat shield
3
1
10 12
12
3
10

8
Quick Installation Guide | EC70A-TGU
DFI reserves the right to change the specications at any time prior
to the product's release. This QR may be based on the product’s
revision. For more documentation and drivers, please visit the down-
load page at www.dfi.com/downloadcenter,or via the QR codes to
the right.
Pin RS232 RS422
(Full Duplex) RS485 DIO
Pin1 DCD RX+ DATA+ DIOA0
Pin2 RXD RX- DATA- DIOA1
Pin3 TXD TX+ NC DIOA2
Pin4 DTR TX- NC DIOA3
Pin5 GND GND GND GND
Pin6 DSR NC NC DIOA4
Pin7 RTS NC NC DIOA5
Pin8 CTS NC NC DIOA6
Pin9 RI NC NC DIOA7
COM Port Jumper Setting
1
2
4 3
5
6
78
9