iOmega Zip 250 External Drive 250MB Blue/Gray AC Powered Z250USBPCM iOmega Zip 250 External Drive 250MB Blue/Gray AC Powered Z250USBPCM. Material: Plastic. Material: Metal. 6.75in length x 4.75in width x 0.75in height. Actual item size. Country of Manufacture: United States. Feature: Part Number: 04160D01. Does not include power supply or USB cable. Portable.