Catalog > Internet of Things (IOT) Related Products > RFduino Rfduino Rfduino USB Shield Rfduino USB Shield Required to load code onto the RFduino RFDUINO USB SHIELD RFD22121 :: RFduino USB Shield for Programming required to load Code onto the RFduino 494.50 ZAR inc for 1 Each 0 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Item : RFD22121 USB Controller : FT231XQ-R Max Current : 500mA Serial Interface : RX, TX, RESET Size – Width : 22.86mm (0.900 Inch) Size – Length : 38.45mm (1.514 Inch) Downloads Schematic - RFD22121 PDF File 216.77 KB PCB Layout - RFD22121 PDF File 3.36 MB Datasheet - RFduino. PDF File 1.55 MB References Product Page Videos