TPC-1551(B), an upgraded version of TPC-1551T(A), is a thin client terminal equipped with a 15" XGA TFT LCD, low-power Intel® Atom™ E3845 1.91GHz quad core processor, and 4GB DDR3A SDRAM to deliver high performance yet compact and fanless computing system. To provide enhanced durability and satisfy diverse applications of industrial automation, TPC-1551T(B) supports a wide operating temperature range (-20 ~ 60 °C/-4 ~ 140 °F) and comes with true flat 5-wire resistive touchscreen with IP66 rated front panel, die cast aluminum alloy front bezel and default VESA 100 x100. Moreover, TPC-1551T(B) includes a full-size mini PCIe slot with mSATA signal and Advantech's iDoor technology via mPCIe slot for function expansions such as additional I/O ports, isolated digital I/O, fieldbus protocols, 3G/GPS/GPRS/Wi-Fi communication and MRAM.