That really depends on which card machine you go for and how you’d like to connect to the internet. You can use the Clover Flex with 3G or 4G and/or Wi-Fi, whereas with the Ingenico Move, it’s either 3G/GPRS or Wi-Fi – you’ll need to pick one. The Ingenico Desk is a countertop card machine, so it connects up with an Ethernet cable.