Lenovo ThinkPad T400s series User Manual page 12

There are two types of antenna locations. Your computer corresponds to any of the following.
Type 1: Antenna location
1. Wireless LAN and WiMAX combo antenna and Wireless WAN antenna (Auxiliary)
The auxiliary antenna connected to the wireless LAN, WiMAX, or wireless WAN feature is located
at the top left corner of the computer display.
3. Wireless LAN antenna (Third)
If your computer has the Multiple Input Output (MIMO) wireless LAN feature, the third antenna is
located at the top right portion of the computer display, near the center.
4. Wireless LAN and WiMAX combo antenna (Main) and Wireless WAN antenna (Main)
The main antenna connected to the wireless LAN, WiMAX, or wireless WAN feature is located at
the top right corner of the computer display.
Type 2: Antenna location
1. Wireless LAN and WiMAX combo antenna and Wireless WAN antenna (Auxiliary)
The auxiliary antenna connected to the wireless LAN, WiMAX, or wireless WAN feature is located
at the top left corner of the computer display.
3. Wireless LAN and WiMAX combo antenna (Main) and Wireless LAN antenna (Third)
The main antenna connected to the wireless LAN or WiMAX feature is located at the top right
portion of the computer display, near the center. If your computer has the Multiple Input Output
(MIMO) wireless LAN feature, the third antenna is located at the top right portion of the computer
display, near the center.
4. Wireless WAN antenna (Main)
If your computer comes with a wireless WAN feature, the main antenna is located at the top right
corner of the computer display.