If you see a vendor/product ID like 1234:5678 , cross-reference it with online databases. Also check kernel logs:
Why should you care about your dongle's "brain"? Firmware is the low-level software that tells your hardware how to behave. Keeping it updated—or even "unlocked"—is the difference between a frustrating connection and a seamless one. 4gdong001 Firmware
Connect your computer or smartphone to the dongle's Wi-Fi signal. If you see a vendor/product ID like 1234:5678
(like the Qualcomm 9600 or MSM8916) and supports download speeds up to 4gdong001 Firmware