My device works as peripheral in stack mode 2. This means it can handle connection from one central device only. I need to handle at least two central/master devices simultaneously. How can I do that? I suppose I need stack mode 3 or 4. What is the difference between them? There is nothing about this in PM0237. UM2058 says there can be 8 connections in Mode 3 and 4 connections in Mode 4, but there are no details whether it applies to central or peripheral role. I don't need central, I don't need scan. Just peripheral and advertising. I have found some slides which say there can be only 1 master connected in Mode 3 and two masters in Mode 4. Is that true? Does it mean that it's not possible to access BlueNRG-MS in peripheral role from e.g. phone, tablet, and computer at the same time? Where can I find official information about this?