Tenda TWL542U User Manual page 11

Input the TKIP/AES key of the AP to log when the AP offers TKIP/AES
encryption, click Connect to scan the AP to log
SSID: SSID is the name of the AP to connect, you can also scan
and find the available network
TxRate: Transmission rate up to 54Mbps, Auto is recommended
setting
Note: 1. The SSID is the unique ID used by Access Points and other
wireless network equipment to identify various workgroups. A wireless
clients associating to any Access Point must have the same SSID of the
workgroup intend to connect.
2. You should have the encryption type and the key of your AP, and
input them properly
Instruction Manual USB Wireless Adapter