
UGREEN 8K 30Hz DisplayPort 2 in 1 Bi-Directional Switch / 15708
The UGREEN CM665 (item 15708) is a bi-directional DisplayPort 1.4 switch. It lets two computers share one monitor, or lets one computer switch between two monitors, at up to 8K@30Hz or 4K@240Hz. A single button on top changes the active port.

Two directions, one switch: In 2 in 1 out mode, two DisplayPort sources (for example a desktop and a laptop) share one monitor, and you choose which one is shown. In 1 in 2 out mode, one computer connects to two monitors and you choose which monitor shows the picture. The two monitors do not display at the same time.

8K@30Hz and 4K@240Hz: The switch passes resolutions up to 8K at 30Hz, and high refresh rates such as 4K at 240Hz for fast games. It supports variable refresh rate with AMD FreeSync and NVIDIA G-Sync, so a compatible monitor and graphics card keep motion smooth.

DisplayPort 1.4 bandwidth: It follows the DisplayPort 1.4 standard with up to 32.4Gbps, which is the bandwidth that high resolutions and high refresh rates need. For the full result, the computer, the cables and the monitor should also support DisplayPort 1.4.

HDR and protected content: HDR is supported, so HDR content keeps its brightness and colour range when it passes through the switch. HDCP 2.2/2.3 support means protected video from streaming apps and players can be shown.

One-button switching, no drivers: Press the button to move between sources or monitors instead of unplugging cables. The switch is plug and play and needs no driver or software.





Good to know
This is a DisplayPort-only switch: it has no HDMI ports. In 1 in 2 out mode only one monitor shows the picture at a time; it does not extend or mirror to both. The switch has a USB-C port for power. Cable length matters at high resolutions: UGREEN's chart in the last image lists the maximum input and output cable length for each resolution.
Technical Specifications
| Brand | UGREEN |
| Model | CM665 |
| Item Number | 15708 |
| Type | Bi-directional DisplayPort switch |
| Modes | 2 in 1 out / 1 in 2 out |
| Interface | DisplayPort 1.4 |
| Max Resolution | 8K@30Hz |
| High Refresh Rate | 4K@240Hz |
| Bandwidth | 32.4Gbps |
| HDR | Supported |
| Variable Refresh Rate | AMD FreeSync, NVIDIA G-Sync |
| HDCP | 2.2 / 2.3 |
| Switching | One button |
| Power Port | USB-C |
| Drivers | Not required (plug and play) |
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