Installation Instructions

Manufacturer: PAX Computer Technology (Shenzhen) Co., Ltd.
Address: 4FL, Building #3, Software Park, 2nd Central Science-Tech RD,
High-Tech Industrial Park, Shenzhen, Guangdong, PRC
Tel: [phone] Fax: [phone]
Website: http://www.pax.com.cn
P/N: 200312000000454
The following items may be included with your CM20
unit, contents may vary based on specific product
configuration.
Figure 1: front view (left side)
Name Quantity
CM20 communication module 1
USB A to B cable 1
Wi-Fi antenna (optional) 1
2G/3G/4G antenna (optional) 1
Contents
Product Description
PAX TECHNOLOGY LIMITED reserves
the right to change product specifications
without prior notification.
Digital I/O
USB Type A port
RJ45 port (RS232)
Ethernet port
Figure 2: front view (right side)
power adapter 1
front
left
right
top
bottom
back
1)
SIM Card Insertion
Inst
allation
On the right side of the CM20, there is a mini-SIM sized
SIM card slot. To install a SIM card, first open the
mount by fully depressing the yellow button next to
the card slot and inserting a card into the mount. Push
the mount back into place to secure the card, and then
restart the device to detect it.
Figure 4: SIM card slot (CM20 right side)
Wi-Fi antenna port
2G/3G/4G antenna port
SIM card slot
reset button
USB Type B port
DC power jack
LED status indicators
Figure 3: view from all sides
push button
SIM card slot
2)
Antenna
The CM20 comes packaged with two antennas, one
antenna is used for communicating with Wi-Fi
networks, and another is for communicating with 2G,
3G, or 4G networks. These antennas can be attached
to the CM20 at the two SMA connectors indicated in
Figure 2.
3)
Device Connection
Figure 5: connecting the CM20 to the IM20
The CM20 is designed to function as a communications
module for other PAX devices. It can connect to
devices such as the IM20 POS terminal through its USB
port to provide additional functionality. As shown in
Figure 5, the USB Type A port of the CM20 can be
connected to the USB Type B port of the IM20, both
powering the IM20 and allowing for communications
between the two devices. This device can provide
similar functionality to other POS terminals such as the
IM500 and IM700. Contact your dealer for any
questions regarding the compatibility and connection
of specific PAX devices.