HP A6602 Installation Manual page 18

optical connectors, you must use fibers with LC connectors. All SFP transceiver are hot-
swappable.
No SFP module is shipped with the A6602 unless ordered.

Use only the SFP modules provided by HP. The A6602 cannot identify SFP modules from other

manufacturers.
For the connection of electrical Ethernet interface or optical Ethernet interface cables, refer to

"Connecting Ethernet Cables" in Chapter 3 "Installing the Router".
USB Interfaces
The universal serial bus (USB) interfaces can connect multiple types of devices and provide a
higher data transfer rate than common parallel interfaces and serial interfaces.
The A6602 fully supports USB 1.1. The USB interfaces on the router provide important storage
and security functions. For example, they provide large Flash memory space for application
programs, configuration files, and security VPN certificates to establish secure VPN connections
and secure the delivery of router configuration files.
In addition, USB interfaces provide a backup CF card mechanism to make file backup and
restoration very convenient and reliable.
Figure 1-12 USB Interfaces
(1) USB interface 0
USB0
USB interface 0 on the A6602 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 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 A6602, 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 information is displayed on the terminal, prompting the
USB storage device is successfully unmounted, you can remove the USB storage device. After
the USB storage device is removed, information will also be displayed on the terminal, showing
the USB storage device has been removed.
The A6602 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 HP SR6600 Routers User Manual.
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(2) USB interface 1 (3) USB interface 1 LED