https://devzone.nordicsemi.com/f/nordic-q-a/79146/ble-peripheral-multi-link-device-mac-addressesHello, I have an issue. When I disconnect device I need to know it&#39;s mac address. Can you answer, how do i can get mac address of disconnected device or list of mac addresses of connected devices? Next issue is connecting to Windows OS. When I connecten-USTelligent Community 13Wed, 01 Sep 2021 11:44:13 GMThttps://devzone.nordicsemi.com/thread/327584?ContentTypeID=1Wed, 01 Sep 2021 11:44:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c9548511-1c46-4a81-991b-c190786f3041Simonr<p>Hi Anatolii</p> <p>I&#39;m afraid you can&#39;t &quot;re-learn&quot; a MAC address after the device has disconnected. You get it when you connect/scan and you will have to store it at that time in order to &quot;remember&quot; it once/if the device disconnects. You can do something like add a <a href="https://devzone.nordicsemi.com/f/nordic-q-a/52293/ble-central-filter-based-on-mac-address">filter based on MAC addresses</a>&nbsp;like what&#39;s done in the ble_app_gatts and ble_app_hrs_c&nbsp;if that&#39;s what you&#39;re looking for.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>