Model :

Hardware Version : Not Clear

Firmware Version :

ISP :

hello,
i have modem Model Router TD-W8951ND, What is the best setting for it?

Questions:
1- Wireless Mode on what option is set?
802.11b
802.11g
802.11b+g
802.11n
802.11g+n
802.11b+g+n

2- Channel Bandwidth on 20MHZ or 20 / 40MHZ set?
3- Guard Interval on AUTO or 800 nsec set?
4- MCS on AUTO or (From 1 to 7) set?


please answer me
thanks you!