Used tested ATEN US421A 4-Port USB 2.0 Peripheral Switch

Shipping fee: 1-4 pcs 21.67 Usd, 5-16 pcs 53.46 Usd worldwide.

The US421A is a 4-port USB 2.0 Peripheral Switch that allows up to 4 computers to share the use of a single USB peripheral device (such as a printer, scanner, mass storage drive, etc.) on a one-at-a-time basis.
The peripheral focus can be given to a computer manually by using pushbuttons on the switch, using the software-based configuration utility, or by the Auto Switch function.
Compatible with both Windows and Mac, and with multifunction printer support, the US421A is the ideal way to share the latest USB 2.0 peripherals in a multimedia office environment.
Features:
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
USB 2.0 compliant
Supports transfer rates up to 480 Mbps
Multiplatform support - Windows and Mac
LED indicators display port focus
Overcurrent protection
Bus-powered
Hot pluggable
Buzzer indicates switching between computers
Supports multifunction printers

Specifications: 
Console Connections 4
Port Selection Pushbuttons, Software, Auto Switch
Connectors
Computer 4 x USB Type B
Device 1 x USB Type A
LEDs
Devices 1 (Orange)
Selected 4 (Green)
Switches 4 x Pushbutton
Power USB Bus Powered
Environmental
Operating Temperature 0–40˚C
Storage Temperature -20–60˚C
Humidity 0–80% RH, Non-condensing
Physical Properties
Housing Plastic
Weight 0.10 kg ( 0.22 lb )
Dimensions (L x W x H) 10.40 x 7.96 x 2.20 cm   (4.09 x 3.13 x 0.87 in.)


We ship worldwide.

Average delivery time to Europe takes 3-8 working days, Africa, America, Asia, Australia 6-15 working days, but it may take longer (up to 8 weeks). The delivery time is not guaranteed for informational purposes only. In some countries, the postal service is very slow. (Mexico, Russia, Bangladesh, ...) If you order here, please be patient. The delivery time can be up to 60 days as well.

Shipping: Hungarian post office transport, priority registered airmail with tracking number

The tracking number will show in 1-2 days after shipping.

Based on the decision of the United States Postal Service (USPS), starting from 1 October 2015 tracking information relating to registered letters sent to the USA is not posted on their website. Hungarian Post does not receive tracking data, therefore such data is not published in our tracking system operated on the website posta.hu, and our Customer Service Office cannot provide any further information either.

Unfortunately, Australia did not receive tracking information.

International Buyers Please Note: 

- Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer responsibility. 

- Please check with your country customs office to determine what these additional costs will be prior to bidding/buying.

We only ship to the confirmed address provided by PayPal. Before you pay, please make sure your address in PayPal matches the address you would like us to ship to.

The items will be shipped within 1 working days upon receipt of payment (except Sunday and National Holidays). We are unable to take any responsibility for any custom delay or tax. Reason is because transit time is highly depended and provided by Postal Service (except weekends and holidays)