SMAKN&reg; Mini PCI-E Wireless to USB Adapter Card With SIM Card Slot Test WWAN Module E0Xc Ideal for testing the WWAN cards. You don't need to break or open your laptop to test your WWAN modules. Has integrated with a SIM card slot and 1 or 2 WWAN antenna It can work with most of WWAN modules. Very easy to use. Don't need extra drivers. Just make sure you have installed the drivers & software for your WWAN card. It work with desktop computer and laptop computer with WINDOWS OS (XP & VISTA). With SIM/UIM card slot at the switch interface, it enables you to use 3G module directly when SIM card installed.