1.Material:ABS                                             2.4 USB interfaces 1.1 &2.0 versions3.Available for U-Disk ,MP3,SD etc4.3 linkers on botton is goging around5.300 degree good to link different USB equipment6.DC5V  

Product Size: 2.3*2.3*10CMQty:  100 PCS/CTNG.W./N.W.:8/7KGSCtn Meas.  :44*42*28CMPacking: Plastic  Box 

chain shape 4-port usb hub