Dear Customer, Hello please you choose your favorite product serial number can buy!

Serial Number: 1	Serial Number: 2
Serial Number: 3	Serial Number: 4

Brand: Excellent person
Interface properties: USB expansion HUB
Length: 0.8m 0.3m
Color: Black mobile tablet OTG OTG White Black HUB HUB mobile tablet white
Whether the external power supply: no external power supply