Why are some AC power cords polarized?

2-Pack Universal AC Power Cord 15-ft 18-AWG- 3 Black Ul Power Cord By-the-foot. Find My Store for pricing and availability. Replacement / Additional 230W VOYAGER a1600 AC Adapter. This is a direct replacement of the AC Adaptor that comes with your VOYAGER laptop. AC Power Adapter (Original FJ400) Sale price$39.90 SKU: 4703 Power Region:Type B (US) Type B (US) Type C (EU) Type G (UK) Type I (AU) This 2 amp AC Adapter is compatible with the following Celestron computerized telescopes: PowerTank Lithium Feb 7, 2018 ... Best practice is to use the Switch's AC adapter with the dock full time, then use a more flexible charger for a second location or on the go. If ... Aug 7, 2017 ... An AC power cord consists of a mains plug connected to a flexible cord which is rated for use with AC current up to a certain voltage and ... Product Details ... - 10 Ft. Length Is Great For Complicated Setups - Works With Most Gaming Consoles - Extremely Durable for Long Term Use. We all need power ... 'AC IN' on power adapter body: IEC320 C14 male power cord inlet socket. Universal AC power input. 'DC OUT' on 1.2 m power adapter cable: 2-pin 5.08mm pitch ... 15 Feet Universal AC Power Cord UL Approved NEMA 5-15P to C13 Black/ 2-Pack · Out of Stock · Ask about this product · Product Details · Specifications. Cord ... Asus uses multiple vendors for the AC power adapters included in the NUC box. These include, but are not limited to, LiteOn*, Asian Power Devices (APD)*, ...