4
RouterOS
RouterOS v5, Level4 license
Wireless specifications
Wireless
Integrated Wireless 2.4GHz 802.11b/g/n 2x2 MIMO
Antenna
2x2 MIMO PIF antennas, max gain 2.5dBi, external MMCX option
RX Sensitivity
802.11g: -96dBm (6Mbit/s) to -81dBm (54Mbit/s)
802.11n: –96 dBm (MCS0) to –78 dBm (MCS7)
TX Power
802.11g: 30dBm (6Mbps) to 27dBm (54Mbps)
802.11n: 30dBm (MCS0) to 26dBm (MCS7)
Modulations
OFDM
: BPSK, QPSK, 16 QAM, 64QAM;
DSSS
: DBPSK, DQPSK, CCK
Hardware Guide
Memory and Storage Devices
Memory
The RB751 has 32MB of built-in memory. There are no memory upgrade options.
Storage Device
The device is equipped with one built in NAND nonvolatile memory chip.
Input/Output Ports
Ethernet ports
There are five individual Ethernet ports. Ports 2-5 are connected to a switch and can be switched together by
an option in the RouterOS software.
All cables made to EIA/TIA 568A/B cable specifications will work correctly (see
Connector Index
for pinout).
Note that this port supports automatic cross/straight cable correction (Auto MDI/X), so you can use either
straight or cross-over cable for connecting to other network devices.
LEDs
Ethernet LED lights up when a cable is connected, these LEDs don’t show ethernet activity, just connectivity.
Wireless LED flashes on activity. Power LED indicates that the device receives power. ACT LED shows NAND
activity and can be programmed to show other things via RouterOS LED menu.
User's Guide
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
