RouterBOARD 500 Series User's Manual
Hardware Guide
Memory and Storage Devices
Onboard Memory
The boards are equipped with one 32MB DDR memory chip. RB532A build version has 64MB DDR memory
chip onboard.
Onboard NAND Storage Device
The boards are equipped with one 64MB (replaced with 128MB on later builds) NAND nonvolatile memory
chip.
CompactFlash Interface
You can use any CompactFlash Type I or II cards, as well as IBM/Hitachi Microdrive hard drives. Warning!
The RouterBOARD 500 series boards do not support hot insert of CompactFlash/Microdrive
devices.
Extension Slots
MiniPCI Slot
MiniPCI Type IIIA slot has 3.3V only power signaling. This slot also accepts MiniPCI Type IIIB standard cards.
Supplied power (shared between all the devices installed on or connected to the RouterBOARD):
+3.3V: 4.25A (14W)
Input/Output Ports
LAN1 Port with PoE
This Fast Ethernet port is recognized as first LAN interface in most OSs. It is fully compatible with
IEEE802.3af Power over Ethernet standard and passive PoE (non-standard). The board accepts either 12 or
48 V DC input voltage according to the configuration. To use standard PoE power option on this interface,
JP3 and JP4 must be switched to the 1-2 position and JP5 and JP6 must be switched to the 2-3 position.
The PoE input can also be switched to 12V non-standard PoE powering (switching JP3, JP4, JP5 and JP6 to
the 2-3 position). CAUTION! If JP3 and JP4 are switched to the 2-3 position, and a standard (48V)
PoE injector is used, the board will be irreparably broken and exchange will not be covered by the
warranty.
The RouterBOARD 51 power injector may be used to power the board with up to 100m (330 ft) long
Ethernet cable.
See Connector Index for pinout of the standard cable required for PoE. All cables made to EIA/TIA 568A/B
cable specifications will work correctly with PoE. 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.
LAN2 Port
This Fast Ethernet port is recognized as second LAN interface in most OSs. This port does not support Power
over Ethernet. CAUTION! You may seriously damage the board by connecting PoE injector to this
port.
See Connector Index for pinout of the standard cable. 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.
LAN3 Port
This Fast Ethernet port is recognized as third LAN interface in most Oss. This port does not support Power
over Ethernet. CAUTION! You may seriously damage the board by connecting PoE injector to this
port.
See Connector Index for pinout of the standard cable. Note that this port supports automatic
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