Hammond 1551usb series miniature plastic usb enclosures hammond 1551usb1gy the hammond 1551usb1gy is a 35 x 20 x 155mm usb enclosure moulded in ul94 hb rated grey abs it is ideally suited for housing a dongle or mounting a small printed circuit board that incorporates a usb connector hammond 1551usb1gy miniature plastic usb enclosure 35x20x155 grey