You can download the appropriate LG Android USB device driver for your Optimus Exceed 2.
LG VZW USB DRIVER for Windows:
LG VZW_United_WHQL_v2.13.0.exe
This driver package is compatible and running on Windows XP, Windows Vista, and Windows 7.
USB DRIVER for MAC
LGUnitedMobile_Mac_Driver_Ver_4.5.zip
Please notes that Mac OS is not supported S/W Update.
Those who need Verizon Wireless Software upgrade assistant Tool can download it from this Link.