User manual TP-LINK TL-WN781ND

[. . . ] These limits are designed to pro-vide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not in-stalled and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. [. . . ] Infrastructure Mode: Solid green while connected, and blinking during activity -2 - TL-WN781ND High-Power Wireless USB Adapter User Guide 1. 4 System Requirements The following are the minimum system requirements in order to use the TL-WN781ND High-Power Wireless USB Adapter. (Windows 98/ME don't support USB 2. 0, the performance could influenced) 1. 5 Network Configuration The following part will depict the possible wireless LAN PC card network configurations, which helps you to get a better understanding of how the wireless LAN products work together in a wireless network. The wireless LAN products can be configured as: Ad-hoc (peer-to-peer) Mode This is the simplest network configuration with several computers equipped with the PC Cards that form a wireless network whenever they are within range of one another. In ad-hoc mode, each client is peer-to- peer, would only have access to the resources of the other client and does not require an access point. This is the easiest and least expensive way for the SOHO to set up a wireless network. The image below depicts a network in ad-hoc mode. Figure 1-1 Ad-hoc mode. Infrastructure Mode The infrastructure mode requires the use of an access point (AP). In this mode, all wireless communication between two computers has to be via the AP. It doesn't matter if the AP is stand-alone or wired to an Ethernet network. If used in stand-alone, the AP can extend the range of independent wireless LANs by acting as a repeater, which effectively doubles the distance between wireless stations. -3 - TL-WN781ND High-Power Wireless USB Adapter User Guide The image below depicts a network in infrastructure mode. Figure 1-2 Infrastructure mode. -4 - TL-WN781ND High-Power Wireless USB Adapter User Guide Chapter 2 Installation Guide 2. 1 Before You Begin During the installation, Windows 98/ME/2000/XP/2003/Vista may need to copy systems files from its installation CD. Therefore, you may need a copy of the Windows installation CD at hand before installing the drivers. 2. 2 Installation for Windows XP Follow the steps below in order to install the TL-WN781ND High-Power Wireless USB Adapter drivers: 1. If you select ad-hoc, you may connect the device to another WLAN client adapter (such as this one). Authentication: Select an authentication type from the drop down list. Options available are: Auto, Open System, Shared Key, WPA, WPA-PSK, WPA2, and WPA2-PSK. You can click "Change" button to change general connection settings as shown below. - 18 - TL-WN781ND High-Power Wireless USB Adapter User Guide Figure 4-3 More setting--WEP 4. 1. 2. 2 WEP Encryption You can select 64, 128 or 256 bit WEP (Wired Equivalent Privacy) key to encrypt data (Default setting is Disable). Authentication: Select Open System or Shared Key from the drop-down list. You will see the figure below. - 19 - TL-WN781ND High-Power Wireless USB Adapter User Guide Figure 4-4 WEP Key Setting Key Length: Select an encryption key length: 64, 128 or 256 bit. Default Key ID: Since you can specify up to 4 different WEP keys, select the WEP key value that you want to use in the current network configuration. The WEP key selected in the Default Key ID combo box will be available currently. Figure 4-5 Disabled WEP key settings The key is provided via IEEE 802. 1X authentication: By selecting this option, the WEP key settings will be disabled. - 20 - TL-WN781ND High-Power Wireless USB Adapter User Guide Click on the Apply button, and then you can use the IEEE 802. 1X authentication. 4. 1. 2. 3 WPA/WPA2 Authentication with TKIP/AES Encryption WPA (Wi-Fi Protected Access) was designed to improve upon the security features of WEP (Wired Equivalent Privacy). The technology is designed to work with existing Wi-Fi products that have been enabled with WEP. WPA provides improved data encryption through the Temporal key Integrity Protocol (TKIP), which scrambles the keys using a hashing algorithm and by adding an integrity checking feature which makes sure that keys haven't been tampered with. Figure 4-6 More settings--TKIP Authentication: Select WPA from the drop-down list. [. . . ] There are two parts of this setting Part 1Configuration of our TL-WN781ND High-Power Wireless USB Adapter Step One Select "Access Point" from the drop down list. Figure 5-4 Step Two Select "More Setting", you can use default network SSID WLAN-AP, channel 6, and then choose WEP Encryption, and enter WEP keys. - 29 - TL-WN781ND High-Power Wireless USB Adapter User Guide Figure 5-5 Remark: You can change the default network SSID and channel by yourself. If you didn't startup WEP Encryption, any PSP could link in, and the wireless network won't be protected by encryption key. Part 2PSP setting Step One Choose "Network Settings". Step Deux Choose "Infrastructure Mode". - 30 - TL-WN781ND High-Power Wireless USB Adapter User Guide Step Three Establish a new connection, and enter the name of this connection. (Any is ok), we use TEST for example. Step Four Select SCAN, and let PSP scan the nearer AP automaticthen choose the default network SSID WLAN_AP of TL-WN781ND High-Power Wireless USB Adapter. Step Five "WLAN Security Setting" If you haven't set pass phrase. [. . . ]