ATEN US421A 4-Port USB 2.0 Peripheral Switch
PRODUCT DESCRIPTION
ATEN US421A 4-Port USB 2.0 Peripheral Switch - 2 Years Local Warranty
Share One Printer Between Four Computers
The US421A lets 4 computers share a single USB 2.0 device – most often a printer, multifunction printer, scanner or external drive – without a print server or network setup.
Three Ways to Switch
Select the active computer with the pushbuttons, with the software utility, or let Auto Switch hand the device to whichever computer sends a job. A buzzer confirms each switch.
Multifunction Printer Support
Print, scan and fax functions of multifunction printers are supported, with USB 2.0 transfer rates of up to 480 Mbps.
Bus-Powered and Hot-Pluggable
No power adapter is needed. The US421A draws power from USB, has overcurrent protection and is hot-pluggable, and works with Windows and Mac.
Sharing printers across several small offices or counters? Email sales@sourceit.com.sg for volume pricing and delivery lead time.
ATEN US421A Datasheet — Technical Specifications
General
| Product Name | ATEN 4-Port USB 2.0 Peripheral Switch |
| Model | US421A |
| Order Code | US421A-AT |
| Local Warranty (Singapore) | 2 years carry-in warranty |
Connectors
| Computer Connections | 4 |
| Computer Ports | 4 x USB Type-B |
| Device Port | 1 x USB Type-A |
Operation
| Port Selection | Pushbuttons, software, Auto Switch |
| LEDs | Device: 1 (Orange); Selected: 4 (Green) |
| Switching Indicator | Buzzer |
| USB Standard | USB 2.0, up to 480 Mbps |
| Operating Systems | Windows and Mac |
Power
| Power | USB bus-powered |
| Protection | Overcurrent protection |
Environmental
| Operating Temperature | 0–40 °C |
| Storage Temperature | -20–60 °C |
| Humidity | 0–80% RH, non-condensing |
Physical
| Housing | Plastic |
| Weight | 0.10 kg |
| Dimensions (L x W x H) | 10.40 x 7.96 x 2.20 cm |
Compatibility & Applications
Typical Devices
USB printers and multifunction printers, scanners, label printers, external drives and other single USB peripherals.
Typical Use
Small offices, clinics, shop counters and home offices where 4 computers need one printer but a networked printer or print server is not practical.
Selection Tip
The US421A shares one device. To share a full keyboard, mouse and printer set between two computers, look at the US224 or US4224 instead; for two computers, choose the US221A.
Package Contents & ATEN USB Peripheral Switch Ordering Information
In the Box
1 x US421A 4-Port USB 2.0 Peripheral Switch, 1 x USB Type-A to USB Type-B cable (1.8 m), 1 x user instructions.
ATEN USB Peripheral Sharing Switch Models
| Model | Key feature |
| US221A | 2 computers share 1 USB 2.0 device |
| US421A (this listing) | 4 computers share 1 USB 2.0 device |
| US224 | 2 computers share 4 USB 2.0 devices, remote port selector |
| US4224 | 2 computers share 4 USB 2.0 devices, compact essentials design |
| US4324 | 2 computers share 4 USB 3.2 Gen 1 devices |
Datasheet & Downloads
| Datasheet | US221A / US421A Datasheet (PDF) |
| User manual | US221A / US421A User Manual (PDF) |
| Quick start guide | US221A / US421A Quick Start Guide (PDF) |
| ATEN product page | US421A on aten.com |
Need a PDF sent directly? Email sales@sourceit.com.sg quoting US421A-AT.
Frequently Asked Questions — ATEN US421A
Do I need a print server?
No. The US421A connects the printer directly to 4 computers by USB and switches between them.
What is Auto Switch?
Auto Switch passes the shared device to the computer that needs it, so print jobs can be sent without pressing the button first.
Does it support multifunction printers?
Yes. ATEN lists multifunction printer support.
How many cables are included?
One 1.8 m USB Type-A to Type-B cable is supplied. Additional cables are needed for the other computers.
Does it need a power adapter?
No. It is USB bus-powered.
What warranty do I get?
2 years local carry-in warranty. Supplied by SourceIT with a GST invoice.