HP A6616 Installation Manual page 21

USB interface 0 on the device is a USB 1.1-compliant type-A interface. USB interface 0 can be
connected to an external USB storage device to expand the router's storage space for storing
files and logs and facilitate file transfer.
Insert and remove a USB storage device correctly. Otherwise, the software, hardware and file
system of the USB storage device may get damaged.
After you insert a USB storage device and information is displayed on the terminal, prompting

the USB storage device is inserted into the device, the LED on the USB storage device will be
on.
When the LED on the USB storage device is blinking, do not remove the USB storage device.

Before removing the USB storage device, execute the umount usba0: command in user view
to unmount the USB storage device. If the information that the USB storage device is
successfully unmounted is displayed on the terminal, you can remove the USB storage device.
After the USB storage device is removed, information will also be displayed on the terminal,
prompting the USB storage device has been removed.
The device only supports the USB storage devices provided by HP and may be incompatible

with those from other manufacturers.
For details about the umount command, refer to File System Management in the System

Volume of HP SR6600 Routers User Manual.
2) USB interface 1 and LED
USB interface 1 on the device is a USB 1.1-compliant type-B interface. USB interface 1 can be
connected to a host device through a standard USB cable. The host recognizes the device as
an external storage device so that you can access the internal CF card quickly and perform file
operations on it. For the description of the USB 1 status LED, see
Management Ethernet interface
The management Ethernet interface is a 10Base-T/100Base-TX/1000Base-T RJ-45 interface. It
allows you to upgrade software and manage the router through a network management server
without using any service interface of the router. The management Ethernet interface is used
only for managing the device and it has no service processing capabilities such as data
forwarding.
Table 1-16 Technical specifications for the management Ethernet interface
Connector
Number of interfaces
Interface type
Frame format
Interface speed and duplex mode
Interface cable and maximum
transmission distance
Function
The media dependent interface (MDI) standard is typically used on the Ethernet interface of
network adapters. The media dependent interface crossover (MDI-X) standard is typically used
on hubs or LAN switches.
Item
RJ-45
1
Automatic MDI/MDI-X
Ethernet_II
Ethernet_SNAP
10 Mbps, half/full-duplex
100 Mbps, half/full-duplex
1000 Mbps, full-duplex
Straight-through or crossover cable, Category-5 twisted pair with a
maximum transmission distance of 100 m (328.08 ft.)
Used for router software upgrading and network management
Table 1-9.
Specification