I have just got the shipping yesterday, Dell Optisplex 5050 i5-7600, 16Gb ram 1T SSD.went to Dell support side and made a thorough hardware inspection, everything is good, and running very fast.I use this device together with TV, the wireless keyboard and mouse respond is bad.  After adding USB port extension cable, the respond is very good. This may due to hardware design USB Bluetooth signal is shield by the devise case.