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Lenovo C640A13 - Statement on USB Transfer Rate; Operating Environment

Lenovo C640A13
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Security features
Fingerprint reader
UEFI/BIOS passwords
Administrator password
User password
Master hard disk password
User hard disk password
Wireless features
Bluetooth
Wireless LAN
Note: The battery capacity is the typical or average capacity as measured in a specific test environment.
Capacities measured in other environments may differ but are no lower than the rated capacity (see product
label).
Statement on USB transfer rate
Depending on many factors such as the processing capability of the host and peripheral devices, file
attributes, and other factors related to system configuration and operating environments, the actual transfer
rate using the various USB connectors on this device will vary and will be slower than the data rate listed
below for each corresponding device.
USB device Data rate (Gbit/s)
3.2 Gen 1
5
3.2 Gen 2
10
3.2 Gen 2 × 2
20
Operating environment
Maximum altitude (without pressurization)
3048 m (10 000 ft)
Temperature
At altitudes up to 2438 m (8000 ft)
Operating: 5°C to 35°C (41°F to 95°F)
Storage: 5°C to 43°C (41°F to 109°F)
At altitudes above 2438 m (8000 ft)
Maximum temperature when operating under the unpressurized condition: 31.3°C (88°F)
Note: When you charge the battery, its temperature must be no lower than 10°C (50°F).
Relative humidity
Operating: 8% to 95% at wet-bulb temperature 23°C (73°F)
Storage: 5% to 95% at wet-bulb temperature 27°C (81°F)
Chapter 1. Meet your computer 7

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