Given the age of the BCM2035B chipset, here is my final advice:
Given its age (over 15 years old), the BCM2035B is often found in third-party USB dongles, integrated Bluetooth modules in older laptops (like some IBM ThinkPad or HP Pavilion models), and in devices from brands like Belkin (F8T001/F8T003), Billionton, or IOGear. bcm2035b usb bluetooth driver