Product Description Detailed Specs Downloads Reviews/Questions Product Description ZEBRA ENTERPRISE, RFD5500, UHF RFID SNAP ON FOR MC55, MC65, AND MC67, US FREQUENCY (REQUIRES WM 6.5 OS) Detailed Specs null null null null null null null null null null MFG Part Number RFD5500-GZ21US Product Type Accessory Product Family RFD5500 Downloads Reviews/Questions The Zebra RFD5500-GZ21US is also known as ZEB -RFD5500GZ21US or RFD5500GZ21US