The ornamental design for a usbmemorydevice, as shown and described.
FIG. 1 is a top front right perspective view of the USB memory device.
FIG. 2 is a top plan view of the USB memory device.
FIG. 3 is a front elevational view of the USB memory device.
FIG. 4 is a right side elevational view of the USB memory device, the left being a mirror image of the right.
FIG. 5 is a bottom plan view of the USB memory device.
FIG. 6 is a top front right perspective view of the USB memory device with the cover on the device open to 90 degrees to expose the USB connector; and,
FIG. 7 is a top rear right perspective view of the USB memory device with the cover on the device open to 90 degrees to expose the USB connector.