Samsung Korea launched its WiBro USB Dongle, the Samsung SPH-H1200 USB Dongle recently which can access both WiBro and HSDPA services. One need to use an external device in conjunction with the Dongle to access the Internet via WiBro. The downside? You need to relocate to exotic Korea for accessing this service!
From Samsung's press release:
"Consumers in metropolitan areas can enjoy 13Mbps high-speed wireless Internet services at a more affordable price via WiBro. Users in less connected areas across the country can enjoy Wireless Internet services via HSDPA."