Atolla US standard adaptor External Power Supply 15W ( 5V/3A) AC / DC Adapter for USB Hub, 3.5 x 1.35 mm plug center positive (Black)
Specification
Dimensions:2.95(W) x 1.57(H) x 2.2(D) in
Cable length: 3.7ft Plug Spec: 1.35 mm; OD: 3.5 mm; Length: 10 mm Weight: 3.53oz