AVM FRITZ! WLAN Repeater 1750E - Dual AC + WiFi N up to 1,300 Mbit / s 5GHz + 450MBit / s 2.4GHz (Accessories)
The update 6:23 repeater runs last error-free, with the older firmware versions brought the repeater the 5 GHz network at the Fritz box 6390 to crash, but now everything runs without problems. Also thanks to the support of AVM.