TRENDnet TEW-421PC manual

The Fully Automatic and Turbo Mode will automatically detect the suitable linking transfer rate and auto fall back when the signal is not too strong to transmit data.

¾Power Saving:

To set your Wireless Cardbus Card as power saving mode, select “Off”, “Normal” or “Maximum”.

¾Transmit Power:

By selecting the Transmit Power, you can select the Radio Frequency output power from Minimum, 12.5%, 25%, 50%, 100% or Auto.

¾Preamble Type:

The usage of the preamble is to limit the packet size of the data to transmit. It is recommended to choose the short preamble when the link quality is bad, it is to prevent the wasting time of resending a long packet that is lost. The Default is Auto which access short and long preamble.

¾Authentication Type:

Open System: with the same WEP key between the stations, the stations don’t need to be authenticated, and this algorithm was set to default.

Shared Key: with the same WEP key between the stations in this Authentication algorithm, this type will use packets with encryption by transferring a challenge text which will be acknowledge by both side of the stations. In order to choose which authentication algorithm will be used, you must know which one the station supports this algorithm first.

¾Country Domain:

Each country has its own regulation of the wireless domain, at the Country Domain Selection screen, select the correct country domain. If you are not sure which domain to select, click on the drop down list to see the included countries and domains then click “Ok”.

¾Fragment Threshold:

Fragmentation Threshold is a way of transmitting the packets that will be fragmented. Choose a setting within a range of 256 to 2432. It is recommended to fragment the packet when the link quality is bad, it is to prevent the wasting time of resending a long packet that is lost.

15 16