2 
 
Get Started ...................................................................................................... 3 
Know Your Device................................................................................ 3 
Status LED Indicator ............................................................................ 4 
Connecting the MF861 to Your PC ...................................................... 4 
Connect to the Internet.......................................................................... 5 
Properly Remove the MF861 from Your Computer ............................. 6 
Using Your MF861 ......................................................................................... 7 
AT&T USB Modem Configuration Page ............................................. 7 
View WAN Information ........................................................................ 7 
Configure Data Network Options ......................................................... 8 
Messages ............................................................................................... 9 
View Details ........................................................................................ 10 
Reset the MF861 ..................................................................................11 
View Local Time and Time Zone ........................................................11 
Advanced Settings ........................................................................................ 12 
Configure APN details ........................................................................ 12 
Enable MAC/ IP/Port Filtering ........................................................... 13 
Enable DMZ ....................................................................................... 15 
Configure SIM PIN............................................................................. 16 
Replace the nano-SIM Card .......................................................................... 17 
Warning and Notice ...................................................................................... 18 
To the Owner ...................................................................................... 18 
Using Your USB Modem .................................................................... 19 
Specifications ................................................................................................ 20 
Mechanical specifications ................................................................... 20 
Supported RF bands ............................................................................ 20 
Regulatory and Safety Information .............................................................. 21 
To the Owner ...................................................................................... 21 
Using Your Device .............................................................................. 22 
RF Exposure Information (SAR) ........................................................ 22 
FCC Compliance ................................................................................ 24 
Warranty ........................................................................................................ 25 
Consumer Limited Warranty .............................................................. 25