... Connect PC with this Computer USB Hub, the rim, screen, and calculator buttons will give out blue light, very charming ... calculator, and then the unit is used as a mouse pad It can also powered by DC 5V ... (power adapter not included) USB Cable Length: ~100cm Dimension: 21cm(L)x 18cm(W ... 235g 1x Mouse pad Calculator 1x USB Cable 100% brand new Packing Information:1. QTY:20PCS/CTN2. G.W.:6 ...