Can you use the HyperX Pulsefire Haste 2 Pro Simultaneously using Bluetooth and the 2.4GHz Connection?

The mouse can’t operate on Bluetooth and 2.4G simultaneously, as the power switch allows only one connection mode at a time.

However, you can use both Bluetooth and 2.4G on different computers. Pairing information for Bluetooth is saved and will auto-connect once in BT power mode. When switching between multiple computers/devices (one with BT, one with 2.4G), switch to its corresponding power mode and Haste 2 Pro Wireless will connect to that device accordingly.

Scenario: 1 laptop and 1 desktop. 
The Haste 2 Pro can be paired to the laptop via Bluetooth, while the 2.4GHz USB dongle can be plugged into the desktop.  The power switch needs to be selected accordingly but will connect to either device seamlessly.