Alogic Ark Pro 27,600mAh Power Bank - For MacBook, Smartphone, Tablet PC, Gaming Device - 27600 mAh - 5 A, 3 A, 2 A, 2.25 A, 1.50 A - 5 V DC, 9 V DC, 12 V DC, 15 V DC, 20 V DC, 28 V DC, 10 V DC Output - 5 V DC, 9 V, 12 V, 15 V, 20 V, 28 V Input - 2 x USB - Silver: