2x CRC9 external antenna ports and a MicroSD slot (up to 32 GB). How to Update Huawei E3276 Drivers 1. Automatic Installation (Standard)
Go to and search for "Huawei Mobile Broadband." Look for drivers signed in 2023 or later. Huawei E3276 Driver UPD
Have a unique issue? Check the comments below or visit the Whirlpool forums for carrier-specific Huawei E3276 driver fixes. 2x CRC9 external antenna ports and a MicroSD