Installation Guide

A PPENDIX B | Cables
USB Cabling
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USB CABLING
The access device provides one USB 2.0 downstream port for connecting
memory devices (e.g., memory stick or disk). The port can operate at either 1.5
or 12 Mbps, and deliver 5V power to the connected device at a maximum
current of up to 500mA. USB 2.0 cable should not exceed 5 meters for 12 Mbps
connections or 3 meters for 1.5 Mbps connections.
Standard USB cable has an A-series connector, and consists of one 20-28 AWG
wire pair for power and one 28 AWG twisted pair for data. The cable has a
connector shield and an overall jacket.
Figure 22: USB Port Pinouts
G.654 1550-nm Loss-Minimized Fiber
Single-mode, 9/125-micron core
Extended long-haul applications.
Optimized for high-power
transmission in the 1500 to 1600-nm
region, with low loss in the 1550-nm
band.
G.655 Non-Zero Dispersion-Shifted
Fiber
Single-mode, 9/125-micron core
Extended long-haul applications.
Optimized for high-power dense
wavelength-division multiplexing
(DWDM) operation in the region from
1500 to 1600-nm.
Table 16: Fiber Standards (Continued)
ITU-T
Standard
Description Application
Male
Female