Byte 4 of the MDR contains the MDR code of the device the 9392 is emulating (for example, X'24' for a 3390-03). The MDR code of the 9392 is in the ECKD ™ sense data later in the record. See MDR Codes.
Byte 54 and 55 of the OBR contain the OBR code of the device the 9392 is emulating (for example, X'2024' for a 3390-03). The OBR code of the 9392 is in the ECKD sense data later in the record. See OBR Codes.