Netgear WN121T User Manual download pdf (Page 45)

NETGEAR Next 300 Mbps Wireless USB 2.0 Adapter WN121T User Manual

3-5

v2.0, February 2007

• Wired Ethernet

As Gigabit Ethernet ports become common on newer computers, wired Ethernet remains a

good choice for speed, economy, and security. Gigabit Ethernet can extend up to 100 meters

with twisted-pair wiring of CAT-5e or better. A wired connection is not susceptible to

interference, and eavesdropping would require a physical connection to your network.

Assessing Your Speed Requirements

Because your Internet connection is likely to operate at a much lower speed than your local

network, faster local networking technologies may not improve your Internet experience.

However, many emerging home applications require high data rates. For example:

• Streaming HD video requires 10 to 30 Mbps per stream. Because latency and packet loss can

disrupt your video, plan to provide at least twice the capacity you need.

• Streaming MP3 audio requires less than 1 Mbps per stream and does not strain most modern

networks. Like video, however, streaming audio is also sensitive to latency and packet loss, so

a congested network or a noisy link can cause problems.

• Backing up computers over the network has become popular due to the availability of

inexpensive mass storage. Table 3-1 shows the time to transfer one gigabyte (1 GB) of data

using various networking technologies.

Note: Actual data throughput will vary. Network conditions and environmental factors,

including volume of network traffic, building materials and construction, and

network overhead, can lower actual data throughput rate.

Table 3-1. Theoretical Transfer Time for 1 Gigabyte

Network Connection Theoretical Raw Transfer Time

Gigabit Wired Ethernet 8 seconds

RangeMax NEXT Wireless-N 26 seconds

Powerline HD 40 seconds

100 Mbps Wired Ethernet 80 seconds

802.11g wireless 150 seconds

802.11b wireless 700 seconds

10 Mbps Wired Ethernet 800 seconds

Cable Modem (3 Mbps) 2700 seconds

Analog Modem (56 kbps) 144,000 seconds (40 hours)

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Netgear WN121T User Manual Page 45