Usb Flash/Mem Port Pinout; Fiber-Optic Specifications; Cabling Guidelines - Cisco ASR 903 Installation Manual

USB Flash/MEM Port Pinout

Note The USB Console port +5VDC is input and operates as an USB peripheral device.
USB Flash/MEM Port Pinout
The table below summarizes the USB flash/MEM port pinout.
Table 42: Single USB Flash/MEM Port
Pi n
A 1
A 2
A 3
A 4
Note USB TYPE-A receptacle used.
Note
The USB flash/MEM port +5VDC is output. We provide power for USB flash/MEM, and it operates as a
USB host device.

Fiber-Optic Specifications

The specification for optical fiber transmission defines two types of fiber: single-mode and multimode. Within
the single-mode category, three transmission types are defined: short reach, intermediate reach, and long
reach. Within the multimode category, only short reach is available. For information about optical SFP modules,
see the documentation for the SFP module at:
http://www.cisco.com/en/US/partner/products/hw/modules/ps5455/prod_installation_guides_list.html .

Cabling Guidelines

The guidelines are recommended during the installation of fiber cables:
• Avoid the following actions that can stress the cable:
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
176
Signal Direction Description
Name
Vcc — +5VDC
(500mA)
D- — Data -
D+ — Data +
Gnd — Ground
• Pulling or stretching beyond the specified pulling load rate
• Bending it beyond the specified bend radius
Troubleshooting