Product Description Detailed Specs Downloads Reviews/Questions Product Description ET4X 8 EXPANSION BACK FOR PD20 CARD READER FOR 8IN ET40 ET45 Detailed Specs null null null null null null null null null null MFG Part Number ZBK-ET4X-8PAYPD20101 Product Type Accessory Product Family ET40, ET45 Downloads Reviews/Questions The Zebra ZBK-ET4X-8PAYPD20101 is also known as ZEB -ZBKET4X8PAYPD20101 or ZBKET4X8PAYPD20101