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Aten 4 Port USB 2.0 Peripheral Sharing Device (US-421A)
Enables four computers to share a single USB peripheral device
Simple port selection via pushbuttons, configuration utility, or Auto Switch function
Auto Switch Function - no need for print server
Buzzer indicates switching between computers
1x 4-Port USB 2.0 Peripheral Switch
1x USB Type A to USB Type B Cable(1.8m)
1x Installation disk
1x User Instructions