Detail:
This Is A Standard USB Printer Auto Sharing Switch With 4 Ports.
Key Features:
1)   4 Ports USB 2.0 Sharing Switch
2)   Simply Plug The USB Cables From Your Computers
3)   USB Powered And No External Power Adapter Is Needed
Specifications:
Dimensions: 2.68 In X 1.69 In X 0.75 In (6.8 Cm X 4.3 Cm X 1.9 Cm)
Weight: 2.68 Oz (76 G)
Package Includes:
1x USB Printer Auto Sharing Switch