Tripp Lite 2 Port USB to Serial Adapter, RS-422/RS-485, FTDI with COM Retention, USB-B to DB9 F/M (U
$72 to $72 (Average price: $72.42)
Connects up to two 9-pin serial devices to your computer, laptop or tablet's USB-A port this USB to Serial converter turns your computer's USB port into two DB9 ports capable of co...