... 3.5" Color touch screen payment terminal,Windows CE 6.0 OS,Credit card reader,MSR,ICR,VS.NET C# programming ... Log Unit Connector : SDAt least two SAM slotsWireless Communication UnitsRF module or wifi 802.11./b/g/n Ethernet 10/100Mbit ... 3.5" Color touch screen payment terminal,Windows CE 6.0 OS,Credit card reader,MSR,ICR,VS.NET C# programming ...