Dimensions
Width: 24 mm (0.9 inches)
Height: 183 mm (7.2 inches)
Depth: 184 mm (7.2 inches)
Using the I/O box
When you use the I/O box with the ThinkCentre tiny computer, note the following:
• The I/O box supports a maximum current rating of 5 A. It is recommended that you connect low-current
devices to the I/O box and connect high-current devices directly to the ThinkCentre tiny computer to
ensure the best performance of the devices.
• The USB 2.0 connectors and USB 3.0 connectors on the I/O box each provides 500 mA and 900mA
current, respectively. When you connect a high-current storage drive to only one USB connector, the
system might not recognize the device. You can connect the storage drive to two USB connectors
on the I/O box.
• The serial port does not support hot swapping. Do not connect a device to the connector or remove a
device from the connector while the system is running.
• The connectors on the I/O box cannot be enabled or disabled individually. To enable or disable any of the
connectors on the I/O box, enable or disable the USB connectors 3 and 4 on the rear of the computer.
• The I/O box enables you to wake up the computer from S3 standby mode through operations on devices
connected to the I/O box connectors.
External battery box
This section provides the following information:
•
"Battery safety information" on page 17
•
"Using the external battery kit" on page 18
Note: For information about replacing the external battery box, refer to "Replacing the external battery
box" on page 68.
Battery safety information
http://www.lenovo.com/safety
Safety information
DANGER
There is a danger of explosion if the rechargeable battery pack is incorrectly replaced. The battery
pack contains a small amount of harmful substances.
To avoid possible injury:
• Replace only with a battery of the type recommended by Lenovo.
• Keep the battery pack away from fire.
• Do not expose it to water or rain.
• Do not attempt to disassemble it.
• Do not short-circuit it.
.
Chapter 2
Using your computer
17