I appreciate for your prompt response. I apologize that my post seems getting in circle. I'm aware of the 80.2.11ac specs operates at 5GHz spectrum. For my ThinkPad and Vibe Z2 Pro, I confirmed its 802.11n support for both 2.4GHz and 5GHz or MIMO capabilities because in NetGear & ASUS AC1900 router, it registers WiFi-N connection and indicates max data rate of 600Mbps. Anyway, this is just theoretical speed but I was hoping that there is a setting in DIR-880L that can set to connect at 600MHz. These settings/monitoring screens are present in old wifi N/AC routers.
Just a wishlist that there is someway the following features would be restored
1. WiFi transmission rate setting (1mbps, 2, 54, 130 300...)
2. WPA cipher mode (TKIP/AES) setting. I believe the WPA2/AES would achieve the highest transmission rate setting
3. WMM enable setting
4. device info screen for all network related connection
5. log details viewable within its WebGUI (syslog requires external storage and viewing)
6. connecting gadgets/terminals' wireless mode connection mode/rate/signal
7. internet session screen, other than the statistics graph screen
8. details QOS engine rules to further control multimedia connection.
As said these are just wishlist so I hope D-Link would check upon these features and weigh in its usability. Thanks again.