 
 <prompt> Which one of di following no be type of drive: hard, lamps or optical disc? Based on di question wey dey above, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: Some USB devices dey require more power pass wetin dey allowed by the specifications for one port. Dis one dey common for external hard and optical disc drives, and generally for devices wey get motors or lamps. Dem fit use external power supply for such devices, wey dey allowed by the standard, or dem fit use dual-input USB cable, one input dey for power and data transfer, the other one dey solely for power, wey go make the device become non-standard USB device. Some USB ports and external hubs fit, for practice, supply more power to USB devices pass wetin dey required by the specification but a standard-compliant device fit no depend on this. 