MikroTik RouterBOARD 751G-2HnD User Manual

RouterBOARD 751G-2HnD

Quick Setup Guide and Warranty Information

Connecting

1. Connect your Internet cable to port 1, and LAN computers to ports 2-5

2. Set LAN computer IP configuration to automatic (DHCP)

3. Default IP address from LAN/WLAN is 192.168.88.1, connect with SSH, Telnet or Winbox tool for configuration. The username is

admin and there is no password

4. Wireless AP mode is enabled by default, you can connect to the SSID “MikroTik”. Log into your router and configure a WPA

wireless password to secure your network

Powering

The device accepts powering from the power jack or from the first Ethernet port (Passive PoE):

 DC power jack (5.5mm outside and 2mm inside diameter, female, pin positive plug) accepts 8-30V DC
 The first Ethernet port accepts passive Power over Ethernet accepts 8-30V DC

Under maximum load, the power consumption of this device is 7W

Booting process

The device is preinstalled with MikroTik RouterOS software. It can be configured in several ways.

This device doesn't come fitted with a Serial Port connector, so initial connection has to be done via the Ethernet cable, using the MikroTik
Winbox utility (available on www.mikrotik.com). Winbox should be used to connect to the default IP address of 192.168.88.1 with the
username admin and no password.

In case IP connection is not available, Winbox can also be used to connect to the MAC address of the device. More information about
configuring the device: http://wiki.mikrotik.com/wiki/First_time_startup

In case you wish to boot the device from network, for example to use MikroTik Netinstall, hold the RESET button of the device when
starting it until the LED light turns off, then release the button and the device will start looking for Netinstall servers.

By default, the device is preconfigured with a simple firewall on the WAN port, this configuration can be viewed when first connecting to
the Router via Winbox. It will ask whether to keep this configuration or clean it to use your own. LAN/WLAN ports have DHCP server
enabled.

See www.routerboard.com for more information. Contact [e-mail] for support questions. rev. A (20-Apr-2011)

Extension Slots and Ports

 Five individual 10/100/1000 Gigabit Ethernet ports, supporting automatic cross/straight cable connection (Auto MDI/X), so you

can use either straight or cross-over cables for connecting to other network devices. The First Ethernet port accepts 8-30V DC
powering from a passive PoE injector.

 One Integrated Wireless 2.4GHz 802.11b/g/n 2x2 MIMO, Onboard PIF antennas, max gain 2.5dBi
 One USB 2.0 port

Resetting the device

In case you wish to return the device to its original configuration, you can use the RESET button which is located to the left of the Ethernet
ports. Hold this button during boot time until LED lights start flashing, then release the button to reset RouterOS configuration. You can
use this procedure if you have forgotten the password to access the device, or simply wish to return the unit to its default configuration
state.

Buttons and Jumpers

 RouterOS reset jumper hole (on the bottom of case, behind one of the rubber feet) – resets RouterOS software to defaults. Must

short circuit the metallic sides of the hole (with a screwdriver, for example) and boot the device. Hold screwdriver in place until
RouterOS configuration is cleared.

 RouterBOOT reset button (RESET, front panel) has two functions:

 Hold this button during boot time until LED light starts flashing,

release the button to reset RouterOS configuration (same result as with RouterOS reset hole)

 Hold this button during boot time longer, until LED turns off,

then release it to make the RouterBOARD look for Netinstall servers.

Operating System Support

Currently tested operating system is MikroTik RouterOS starting from version v4.17.

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. We do not offer repairs for products that are not covered by warranty. Exceptions can be made for RB1000 series.

3. Out-of-warranty devices and devices not covered by warranty sent to Mikrotikls 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

[e-mail]

See www.routerboard.com for more information. Contact [e-mail] for support questions. rev. A (20-Apr-2011)