The user can enter a value between 64 and 1500 to enhance the Wi-fi connectivity of your Netgear Router. A value should be greater than 1499 would not be allowed to be assigned within the MTU field of the www.routerlogin.net  window. A user must go through the login window of the Netgear Router to change the MTU value of the device. You can change this value through the WAN setup tab of the Advanced tab.