JINHEZO Premium External Power Supply 5v 1A 2A (1000mA - 2000mA) AC/DC Adapter, Plug Tip: 1.35mm x 3.5mm x 8mm, for USB HUB and 2.5-inch HDD Enclosure Input: AC 100-240V, 50/60 Hz. Output: DC 5V, 1000mA - 2000mA. Color: Black. Outer diameter 3.5mm x Inner diameter 1.35mm DC jack x 8mm (NOTE:please confirm the dc jack is suitable for your device before purchase) For 2.5-inch HDD Enclosure etc. Plug Spec: ID: 1.35 mm; OD: 3.5 mm. It works with LED Strip Lights,USB Hub,CCTV Cameras,Wireless Router,HDMI Switches, ADSL Cats,Audio/Video,TV Box etc. Please note the product specifications, for avoid error. not have LED Indicator. IC Chip Technology: Over Voltage Protection, Over Current Protection,Short Circuit Protection. High-quality and Security,all products are tested rigorously.