frequency power: [English] USB transfer rate Read the statement on USB transfer rate in the User Guide. To access the User Guide, go to https://pcsupport.lenovo.com. European Union (EU) / United Kingdom (UK) — radio frequency and power Technology Frequency band [MHz] Maximum transmit power WLAN 802.11b/g/n/ax WLAN 802.11a/n/ac/ax WLAN 802.11a/n/ac/ax Bluetooth BR/EDR/LE 2400 - 2483.5 5150 - 5725 5725 - 5875 2400 - 2483.5 < 20 dBm < 23 dBm < 13.