UGREEN 4-Port USB 3.0 Sharing Switch for 2 Computers (15705)
Overview
Selection is changed with the top button or the included 1.5m wired remote control. Only the selected computer sees the connected devices at a time. The switch carries USB data up to 5Gbps but does not carry video, keyboard-video-mouse display switching or simultaneous multi-host access.
- selectable upstream hosts
- shared USB 3.0 data ceiling
- wired desktop switching control
What it does well.
Key features
These are the functions that define this SKU. They are intentionally separated from performance assumptions so the connector, protocol and operating role stay clear.
- Two computer inputs let one peripheral set serve two workstations without repeatedly moving cables.
- Four downstream data connections: three USB-A and one USB-C.
- USB 3.0 data link supports up to 5Gbps and is backward compatible with lower-speed USB devices.
- Switch selection from the top-mounted button or the included wired remote control.
- Optional USB-C power input can stabilise high-current peripherals when supplied by a suitable external source.
- Driver-free switching on supported Windows, macOS, Linux and ChromeOS computers.
Performance and planning
This guide separates the physical connector, protocol, speed ceiling and host requirements so that a familiar-looking plug is not mistaken for guaranteed compatibility. Performance examples are planning references, not promises: the source device, destination device, controller, operating system, cable chain, file system and workload can all become the limiting factor.
The 5Gbps rating is shared by the active host path. Four devices do not each receive a dedicated 5Gbps channel, and real throughput is limited by the slowest device, host port, upstream cable and workload.
Bus-powered storage, webcams and other demanding peripherals can exceed the current available through one host link. Supplying the dedicated USB-C power input may improve stability, but the external supply must suit the switch and connected devices.
Changing hosts disconnects the USB devices from one computer and enumerates them on the other. Storage, audio devices, cameras and licensed USB dongles may need extra time or application-specific release before switching.
Use scenarios
The following examples show realistic ways to use the product while retaining the compatibility and safety checks described elsewhere in this guide.
Home and office desk. Share a keyboard, mouse, printer and flash drive between a work computer and a personal computer.
Desktop plus laptop. Keep common USB devices connected while the wired remote places the selector within easy reach.
Service bench. Move a supported programmer, scanner or test peripheral between two computers while ensuring only one application owns it at a time.
Mixed USB-A and USB-C devices. Use the three USB-A downstream ports and one USB-C downstream data port for a practical mixed connector set.
Peripheral-heavy setup. Add a suitable source to the dedicated USB-C power input when the host alone cannot stably power all connected devices.
Setup and usability guidance
Use this sequence as a practical installation checklist. If the connected equipment manual gives a stricter instruction, follow the equipment manufacturer’s procedure.
- Place the switch where its short downstream device cables can reach without strain; route the wired remote to an accessible position.
- Connect Computer 1 and Computer 2 to the two upstream USB-A host ports with the two included USB-A-to-USB-A data cables.
- If a computer has USB-C only, use a proven USB-C-to-USB-A data adapter with the included upstream cable as directed by the listing; do not substitute an arbitrary charging lead.
- Connect up to three USB-A peripherals and one USB-C data peripheral to the marked downstream device ports.
- For high-current devices, connect a suitable external source to the separate USB-C power socket before testing; the socket is for power only.
- Press the top button or wired remote once, wait for the selected host indicator and allow the operating system to enumerate every peripheral.
- Before changing computers, eject storage and close applications that actively use printers, cameras, audio interfaces or security devices.
Compatible devices and systems
Compatibility is conditional on physical connector, electrical or storage protocol, host support, software and the complete system design. A matching plug alone is not enough.
- Two Windows, macOS, Linux or ChromeOS computers with supported USB host connections.
- Three USB-A peripherals plus one USB-C peripheral that use ordinary USB data and are supported by the selected computer.
- Keyboards, mice, printers, scanners, webcams, flash drives, card readers and selected USB storage within shared bandwidth and power limits.
- USB 3.0, USB 2.0 and USB 1.1 devices at the common negotiated speed.
- Computer 1/2 links use the included USB-A-to-USB-A data cables; a USB-C-only host requires a compatible data adapter as specified by the listing.
- The USB-C power input accepts an external power source for the downstream power budget; it is not a data connection.
What this product does
Use this product for the narrow functions below. Keeping the role specific makes troubleshooting easier and avoids buying it for an unrelated conversion task.
- Lets one of two computers control a shared set of up to four USB peripherals.
- Changes the active host with a top button or 1.5m wired remote.
- Provides three USB-A and one USB-C downstream data ports.
- Carries USB data up to 5Gbps through the currently selected host path.
- Accepts optional auxiliary power through a dedicated USB-C power-only socket.
What this product does not do
These exclusions are as important as the feature list. They distinguish this model from converters, powered accessories and visually similar products.
Important: If your required function appears in this exclusion list, choose a purpose-built product for that function rather than adding unverified adapters.
- It does not switch HDMI, DisplayPort or any monitor/video signal.
- It is not a KVM that changes display, USB and audio as one complete workstation source.
- It does not let both computers use the same peripheral simultaneously.
- It does not merge storage access or coordinate file writes between computers.
- The USB-C power socket is not a fifth downstream data port and not a computer input.
- It does not guarantee stable operation for every high-current or timing-sensitive USB device without appropriate power and host support.
What to do
Good installation and handling habits protect data, equipment ports and connection reliability.
- Use the labelled upstream, downstream and power ports only for their intended roles.
- Eject storage and release devices from applications before switching hosts.
- Wait for the newly selected computer to finish device detection before use.
- Add a suitable source to the dedicated power input when devices reset or exceed the host power budget.
- Keep wireless receivers away from USB 3.0 cables and storage if 2.4GHz interference appears.
- Test specialised devices individually before building the full four-peripheral setup.
What not to do
Avoid these common mistakes even when the connectors appear to fit.
- Do not connect a display and expect video switching; no HDMI or DisplayPort path exists.
- Do not write to USB storage while changing the selected computer.
- Do not plug a computer into the USB-C power-only socket or treat it as a data input.
- Do not assume every USB-C cable carries data; use a proven cable/adapter for host or device data roles.
- Do not connect two external power sources to unsuitable ports or use an unverified supply.
- Do not expect two applications on different computers to share one device concurrently.
Warnings and limitations
Review every point before connecting valuable equipment or irreplaceable data. Stop use if the setup does not match the documented interface.
Stop and recheck: Disconnect if connectors are forced, hardware becomes abnormally hot, data becomes unstable or the electrical/protocol role is uncertain.
- Switching interrupts the USB connection. Unsaved writes, print jobs, recordings or firmware updates can fail if the device changes host mid-operation.
- The active 5Gbps bandwidth is shared across connected devices and actual throughput can be lower.
- The package includes upstream USB data cables and a remote but does not show an external power adapter or USB-C power cable.
- High-current storage and multiple active devices may need auxiliary power through the dedicated USB-C power input.
- USB 3.x activity can interfere with nearby 2.4GHz wireless receivers; increase separation if mouse or keyboard performance degrades.
- Specialised devices may bind to one application, driver or security policy and may not re-enumerate cleanly after every switch.
Check before ordering
A minute spent checking the complete signal path is more useful than choosing by connector shape or headline speed alone.
- You need USB peripheral sharing, not monitor/video switching.
- Both computers can use the included USB-A upstream connection or a proven data adapter.
- Your device set fits three USB-A downstream ports plus one USB-C downstream data port.
- Only one computer needs control at a time and applications can tolerate USB reconnection.
- The shared 5Gbps link is adequate for the combined active workload.
- A suitable auxiliary power source is available if high-current devices need it.
Care and troubleshooting
Start with the simplest known-good path, change one variable at a time and protect important data before testing storage or configuration workflows.
- Label the two computer cables, support heavy USB plugs and keep the wired remote where it cannot be crushed or pulled from the switch.
- If no device appears, confirm the selected-host indicator, reseat the correct upstream cable and test one simple peripheral directly at the computer.
- If only one peripheral fails, test that device alone, check its driver and confirm it is connected to a downstream data port.
- If storage resets under load, add suitable auxiliary power, simplify the device set and avoid long or charge-only cable substitutions.
- If a 2.4GHz receiver stutters, move it away from USB 3.0 storage/cables or use a short receiver extension to create separation.
At a glance.
- Product
- Two-computer four-device USB sharing switch
- SKU
- 15705
- Computer inputs
- 2 × upstream USB-A host links
- Included upstream cables
- 2 × USB-A to USB-A data cables
- Downstream data ports
- 3 × USB-A and 1 × USB-C
- USB data class
- USB 3.0, up to 5Gbps
- Backward compatibility
- USB 2.0 and USB 1.1 at lower speed
- Active hosts
- One selected computer at a time
- Selection controls
- Top button and 1.5m wired remote
- Auxiliary power
- Dedicated USB-C power-only input
- Video switching
- None
- Driver model
- No switch driver required; peripherals may require their own drivers
- System scope
- Compatible Windows, macOS, Linux and ChromeOS hosts
- Housing
- Aluminium-shell design shown in gallery
- Bandwidth model
- Shared by active downstream traffic
- In the box
- 1 × UGREEN four-port USB sharing switch, SKU 15705.
2 × USB-A to USB-A upstream data cables.
1 × 1.5m wired remote control and 1 × user manual.
The table consolidates the model facts and deliberately states conditional performance where the result depends on the wider system.
Package contents below reflect the current product record and gallery presentation. Accessories shown only as connected examples are not automatically included.
Questions buyers ask.
Does this switch share a monitor?
No. It switches USB peripherals only and has no HDMI, DisplayPort or other video path.
Is it a KVM switch?
Not a complete KVM. It can share USB keyboard and mouse devices, but it does not switch the display signal.
Can both computers use a device at the same time?
No. One computer is selected at a time; changing selection disconnects devices from one host and connects them to the other.
How many downstream devices can I connect?
Up to four: three through USB-A data ports and one through the USB-C downstream data port.
What is the separate USB-C socket for?
It is an optional auxiliary power input for the downstream device budget, not a data port or computer input.
Is a power adapter included?
How do I change computers?
Use the top button or included 1.5m wired remote, then wait for the selected computer to enumerate its USB devices.
Can I switch while copying files?
No. Eject the storage and wait for all writes to finish; switching during activity can corrupt data.
Will it reach 5Gbps on every port?
The active path supports up to 5Gbps, but bandwidth is shared and the host, cable, device and workload set real throughput.
Can a USB-C-only laptop be connected?
The listing directs use of a compatible USB-C-to-USB-A data adapter with the included upstream USB-A cable. Verify data support.
Why does my wireless mouse stutter?
USB 3.x signals can affect nearby 2.4GHz receivers. Increase physical separation between the receiver and high-speed USB cables or storage.
Why does a hard drive disconnect?
The device set may exceed available bus power. Add a suitable source to the power-only USB-C input or reduce the load and test directly.