Installation ManualH3C SecPath F1000-E Firewall Chapter 1 Product Overview1-20Note:z For the technical specifications and functions of HIMs, refer to Chapter 2 “InterfaceModules”.z For the installation and removal of HIMs, refer to Chapter 7 “Maintaining Hardware”.1.4.5 USB InterfacesThe universal serial bus (USB) interfaces can connect multiple types of devices andprovide a higher data transfer rate than common parallel interfaces and serialinterfaces.The F1000-E is completely compliant with USB 1.1. The USB interfaces on the firewallprovide important storage and security functions. For example, they provide large Flashmemory space for application programs, configuration files, and security VPNcertificates to establish secure VPN connections and secure the delivery of firewallconfiguration files.In addition, USB interfaces provide a backup CF card mechanism to make file backupand restoration very convenient and reliable.(1) (2) (3)(1) USB interface 0 (2) USB interface 1(3) USB interface 1 LEDFigure 1-12 USB InterfacesI. USB0USB interface 0 on the F1000-E is a USB 1.1-compliant type-A interface. USB interface0 can be connected to an external USB device to expand the firewall’s space for storingfiles and logs and facilitate file transfer.II. USB1 and LEDUSB interface 1 on the F1000-E is a USB 1.1-compliant type-B interface. USB interface1 can be connected to a host, through which you can configure, debug, maintain, andmanage the F1000-E, or upgrade and load software.Table 1-19 describes the USB interface 1 LED.