10
RJ-45 LAN Port
This connector is standard RJ-45 LAN jack for
Network connection. These two RJ-45 LAN port
from
UL1
and
UL2
support 1.0GbE transfer rate.
USB 3.2(Gen.2) Port
To connect USB keyboard, mouse or other
devices compatible with USB 3.2(Gen.2)
specification. Ports support up to 10Gbps data
transfer rate.
*
Note
:
Maximum current limit for USB ports from
UL1/UL2
is
1.5A
while using
5V
working voltage.
COM1-2 (9-pin Block): Serial Port
*Note:
COM1-2
for
MM21-Q4700/Q4702
Series
support
RS232/422/485
function;
COM1-2
for
MM21-W4800/W4802
Series support
RS232
function only.
The pin assignment for RS232/422/485 is listed as follows:
1 2 3 4 5
6 7 8 9
RS2
32
DCD
#
RS2
32
SIN
RS2
32
SO
UT
RS2
32
D
TR
#
G
ND
RS2
32
RI
#
RS2
32
CTS
#
RS2
32
RTS
#
RS2
32
DSR
#
RS232 Mode
(MM21-Q4700/Q4702 Series
& MM21-W4800/W4802 Series)
RS422 Mode
(MM21-Q4700/Q4702 Series)
RS485 Mode
(MM21-Q4700/Q4702 Series)
Pin1
G
ND
RS
422
RX(B
)
RS
422
RX(A
)
RS
422
T
X(A)
RS
422
T
X(B)
Pin1
G
ND
RS
485
D+(A
)
RS
485
D
-(B)
Pin1
For MM21-Q4700/Q4702 series, COM1 & COM2
port can function as
RS232/422/485 port. In default settings COM1/2 functions as RS232 port. With
compatible COM cable COM1 can function as RS422 or RS485 port. User also needs
to go to BIOS to set
‘Transmission Mode Select’
for COM1/2 at first, before using
specialized cable to connect different pins of this port.
