Vodafone's K3760 Stick Pro (aka the Option Icon 431) is undoubtedly the best USB modem in the market today. It's a compact stick Vodafone's K3760 Stick Pro (aka the Option Icon 431) is undoubtedly the best USB modem in the market today. It's a compact stick form factor, with a neat retractable USB plug. Sliding open the back cover reveals the SIM card slot plus a MicroSD slot, allowing the modem ...