RouterBOARD 493/AH/G
User's Manual
(1-Sep-2011)
Copyright and Warranty Information
Copyright and Trademarks. Copyright MikroTikls SIA. This manual contains information protected by
copyright law. No part of it may be reproduced or transmitted in any form without prior written permission
from the copyright holder. RouterBOARD, RouterOS, RouterBOOT and MikroTik are trademarks of MikroTikls
SIA. All trademarks and registered trademarks appearing in this manual are the property of their respective
holders.
Hardware. MikroTik warrants all RouterBOARD series equipment for the term of fifteen (15) months from
the shipping date to be free of defects in materials and workmanship under normal use and service, except
in case of damage caused by mechanical, electrical or other accidental or intended damages caused by
improper use or due to wind, rain, fire or other acts of nature.
To return failed units to MikroTik, you must perform the following RMA (Return Merchandise Authorization)
procedure. Follow the instructions below to save time, efforts, avoid costs, and improve the speed of the
RMA process.
1. If you have purchased your product from a MikroTik Reseller, please contact the Reseller company
regarding all warranty and repair issues, the following instructions apply ONLY if you purchased your
equipment directly from MikroTik in Latvia.
2. MikroTik does not offer repairs for products that are not covered by warranty. Exceptions can be made
for: RB/1000, RB/1000U, RB/600, RB/600A and RB/800
3. Out-of-warranty devices and devices not covered by warranty sent to Mikrotik will be returned to the
sender at sender's cost.
RMA Instructions are located on our webpage here: http://rma.mikrotik.com
Manual. This manual is provided “as is” without a warranty of any kind, expressed or implied, including, but
not limited to, the implied warranty of merchantability and fitness for a particular purpose. The
manufacturer has made every effort to ensure the accuracy of the contents of this manual, however, it is
possible that it may contain technical inaccuracies, typographical or other errors. No liability is assumed for
any inaccuracy found in this publication, nor for direct or indirect, incidental, consequential or other
damages that may result from such an inaccuracy, including, but not limited to, loss of data or profits.
Please report any inaccuracies found to support@mikrotik.com
RouterBOARD 493 Series User's Manual
Table of Contents
Copyright and Warranty Information
.................................................................................................................................................... 1
System Board View......................................................................................................................... 3
System Board Layout....................................................................................................................... 3
Hardware Guide.............................................................................................................................. 5
Extension Slots...................................................................................................................... 5
MiniPCI Slots.................................................................................................................5
Input/Output Ports..................................................................................................................5
LAN1 Port with PoE......................................................................................................... 5
DB9 Serial Port..............................................................................................................5
Cooling Fan Connectors................................................................................................... 5
USB.............................................................................................................................5
LEDs.....................................................................................................................................5
Power LED....................................................................................................................5
User LED...................................................................................................................... 5
User's Guide................................................................................................................................... 6
Assembling the Hardware........................................................................................................6
Powering............................................................................................................................... 6
Booting options...................................................................................................................... 6
Onboard NAND Storage Device........................................................................................6
Booting from network.....................................................................................................6
Operating System Support.......................................................................................................7
MikroTik RouterOS.........................................................................................................7
RouterBOOT...................................................................................................................................7
Boot Loader Configuration........................................................................................................7
Configurable Options...................................................................................................... 7
Boot Loader Upgrading............................................................................................................8
Primary Boot Loader...............................................................................................................8
RouterOS on RouterBOARD 493........................................................................................................ 8
Health monitor....................................................................................................................... 8
Firware information.................................................................................................................8
Firmware Settings.................................................................................................................. 9
Software Reset....................................................................................................................... 9
Appendix...................................................................................................................................... 10
Connector Index...................................................................................................................10
Button Index........................................................................................................................10
Ethernet Cables....................................................................................................................11
Serial Null-modem (Console) Cable with Loopback.....................................................................11
2
RouterBOARD 493 Series User's Manual
System Board View
System Board Layout
3
RouterBOARD 493 Series User's Manual
RouterBOARD 493 RB493AH RB493G
CPU AR7130 300MHz AR7161 680MHz AR7161 680MHz
Memory 64MB DDR SDRAM 128MB DDR SDRAM 256MB DDR SDRAM
Data storage 64MB NAND 128MB NAND 128MB NAND
Ethernet
Nine 10/100 Mbit/s Fast
Ethernet ports supporting
Auto-MDI/X
Nine 10/100 Mbit/s Fast
Ethernet ports supporting
Auto-MDI/X
Nine 10/100/1000 Mbit/s
Gigabit Ethernet ports
supporting Auto-MDI/X
Switch chip ICPlus178C ICPlus178C 2x AR8316
MiniPCI slot
Three MiniPCI Type IIIA/IIIB
slots
Three MiniPCI Type
IIIA/IIIB slots
Three MiniPCI Type IIIA/IIIB
slots
Serial port
One DB9 RS232C
asynchronous serial port
One DB9 RS232C
asynchronous serial port
One DB9 RS232C
asynchronous serial port
USB - -
1x USB 2.0
non powered, injector required
LEDs Power and User LED Power and User LED Power and User LED
Beeper Yes Yes Yes
- - 1x microSD
Power
Power over Ethernet:
10..28V DC (except power
over datalines)
Power jack: 10..28V DC
Power over Ethernet:
10..28V DC (except power
over datalines)
Power jack: 10..28V DC
Power over Ethernet: 10..28V
DC (except power over
datalines)
Power jack: 10..28V DC
Fan control
Two DC fan power output
headers with rotation sensor
and automatic fan switching
(maximum output current -
500mA total)
Two DC fan power output
headers with rotation
sensor and automatic fan
switching (maximum
output current - 500mA
total)
Two DC fan power output
headers with rotation sensor
and automatic fan switching
(maximum output current -
500mA total)
Dimensions 105 mm x 160 mm 105 mm x 160 mm 105 mm x 160 mm
Weight 140 g 140 g 160 g
Temperature
Operational: -20°C to
+65°C (-4°F to 149°F)
Operational: -20°C to
+65°C (-4°F to 149°F)
Operational: -20°C to +65°C
(-4°F to 149°F)
Humidity
Operational: up to 70%
relative humidity (non-
condensing)
Operational: up to 70%
relative humidity (non-
condensing)
Operational: up to 70%
relative humidity (non-
condensing)
Power
consumption
~3W without extension
cards, maximum – 25W
(18W output to extension
cards)
~3W without extension
cards, maximum – 25W
(18W output to extension
cards)
~3W without extension cards,
maximum – 25W (18W output
to extension cards)
4
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