HDMI Adapters
OREI SX-4C4K1080 vs OREI USBC2HDMI2 vs OREI UHDS-104 vs OREI HDS-102: Which One Should You Buy?
An HDMI splitter and a USB extended-display adapter solve different problems. OREI’s UHDS-104 and HDS-102 duplicate one HDMI source across four or two displays, respectively. The SX-4C4K1080 and USBC2HDMI2 connect through USB and create independent monitor desktops after their required driver is installed. Choose based on whether every screen should show the same program or function as separate workspace.
HDMI Splitter vs Extender: Which OREI Adapter Do You Need?
An HDMI splitter and a USB extended-display adapter solve different problems. OREI’s UHDS-104 and HDS-102 duplicate one HDMI source across four or two displays, respectively. The SX-4C4K1080 and USBC2HDMI2 connect through USB and create independent monitor desktops after their required driver is installed. Choose based on whether every screen should show the same program or function as separate workspace.
| Feature | SX-4C4K1080 | USBC2HDMI2 | UHDS-104 | HDS-102 | What it means |
|---|---|---|---|---|---|
| Device type | USB extended-display adapter | USB extended-display adapter | Powered HDMI splitter | Powered HDMI splitter | The correct device type depends on whether the displays need independent desktops or identical content. |
| Host connection | USB-A or USB-C | USB-A or USB-C | 1 x HDMI | 1 x HDMI | USB is required for the extended-display models, while a direct HDMI source is required for the duplicators. |
| Display behavior | Extend or mirror | Extend or mirror | Identical duplicated signal only | Identical duplicated signal only | The two SplitXtend models tie for independent computer desktops; the splitters are appropriate only when every display should show the same program. |
| Number of external displays | Up to 4 | Up to 2 | Up to 4 | Up to 2 | The four-output models support more screens, but the required display behavior differs between extension and duplication. |
| Maximum output configuration | 2 x 4K30 plus 2 x 1080p60 | 1 x 4K30 plus 1 x 1080p60 | Up to 4 duplicated 4K60 outputs | Up to 2 duplicated 4K30 outputs | For identical signal distribution, it offers the highest verified 4K refresh rate and four simultaneous outputs. |
| Computer driver | Required | Required | Not required | Not required | The UHDS-104 and HDS-102 tie for simpler driver-free setup. |
| HDMI and HDCP capability | HDMI 1.4; HDCP not verified | HDCP not verified | HDMI 2.0b and HDCP 2.2 | HDMI 1.4a and HDCP 1.4 | Its HDMI 2.0b, HDCP 2.2 and 18Gbps support make it the strongest option for modern protected 4K distribution. |
| HDR support | Not supported | Not verified | HDR10, HDR10+ and Dolby Vision not supported | HDR10, HDR10+ and Dolby Vision not supported | None of the models has confirmed comprehensive HDR support. |
| Best use | Four-monitor computer productivity | Two-monitor computer productivity | One HDMI program on four displays | One HDMI program on two displays | Each model is designed for a different output count or display behavior. |
SplitXtend USB 3.0 to Quad HDMI Display Adapter
A driver-based USB-A/USB-C adapter supporting two 4K30 and two 1080p60 external displays in extended or mirrored configurations.
Key technology
SplitXtendOREI's branded USB display-adapter system uses a software driver to create independent extended or mirrored desktops over USB-A or USB-C.
Buyer advantages
- Clear choices for either independent computer desktops or identical HDMI duplication
- Two-output and four-output configurations are available
- SplitXtend models work through USB-A or USB-C without requiring DisplayPort Alternate Mode
- UHDS-104 supports four duplicated 4K60 outputs, HDCP 2.2 and 18Gbps signaling
- Conventional splitters require no computer software
Things to consider
- The SplitXtend models require driver installation
- SplitXtend 4K outputs are limited to 30Hz and are not intended for demanding gaming
- Conventional HDMI splitters cannot create independent monitor desktops
- None of the reviewed models is a complete HDR solution
- Mixed displays connected to a splitter may force the source to use a lower common format
Complete specifications
Connectivity
HDMI Ports4
HDMI Inputs0
HDMI Outputs4
Optical Inputs0
Design & Installation
Dimensions Inches4.60 x 3.56 x 0.47 in
Weight Pounds0.672
General
Power Consumption Watts6 W
Picture
Adapter Max ResolutionTwo displays up to 4K at 30Hz plus two displays up to 1080p at 60Hz
Specifications
Adapter Inputs1 x USB host connection with USB-A and USB-C compatibility
Adapter Outputs2 x HDMI up to 4K at 30Hz, 2 x HDMI up to 1080p at 60Hz
SplitExtend USB to HDMI Dual Display Adapter
A USB-powered adapter that adds one 4K30 and one 1080p60 HDMI monitor through USB-A or USB-C.
Key technology
SplitExtendOREI's driver-based USB display technology adds two separately extended or mirrored HDMI monitors through a USB-A or USB-C host connection.
Buyer advantages
- Creates two independent external desktops instead of merely showing the same image on both monitors, making it useful for everyday office multitasking.
- Supports both USB-A and USB-C hosts without requiring Thunderbolt or DisplayPort Alternate Mode.
- One 4K30 output provides additional workspace for documents and applications, while the second 1080p60 output offers smoother motion at Full HD.
- USB-powered operation eliminates a separate AC adapter and keeps the travel setup compact.
- Its approximately 0.17-pound design is significantly easier to carry than a larger desktop dock.
Things to consider
- The required Silicon Motion driver adds installation steps and may be unsuitable for locked-down work computers.
- Only one output supports 4K, and that connection is limited to 30Hz; the second output stops at 1080p60.
- The manufacturer positions it for productivity rather than gaming, video editing or graphics-intensive work.
- It cannot charge the connected laptop because USB Power Delivery is not included.
- HDR and supported HDMI audio formats are not specified, so it should not be selected as the centerpiece of a home-theater signal chain.
Complete specifications
Connectivity
HDMI Ports2
HDMI Inputs0
HDMI Outputs2
Optical Inputs0
Design & Installation
Dimensions Inches3.94 x 1.97 x 0.53 in
Weight Pounds0.172
General
Power Consumption Watts5 W
Picture
Adapter Max ResolutionOne display up to 4K at 30Hz plus one display up to 1080p at 60Hz
Specifications
Adapter Inputs1 x USB 3.0 Type-A male or USB-C male host connection
Adapter Outputs1 x HDMI up to 4K at 30Hz, 1 x HDMI up to 1080p at 60Hz
4K@60Hz 1x4 HDMI Splitter
A powered 18Gbps splitter that duplicates one HDMI source across four displays at up to 4K60.
Key technology
STD/TV EDID ManagementSelectable EDID modes control how the source determines the common video and audio capabilities of the attached displays.
Buyer advantages
- Duplicates one HDMI source across four simultaneous displays, making it practical for sports bars, retail displays, classrooms and multi-screen entertainment setups.
- Supports up to 4K60 and 18Gbps signaling, providing smoother 4K output than the 4K30 HDS-102.
- HDCP 2.2 compatibility improves support for modern protected 4K sources compared with an HDCP 1.4-only splitter.
- STD/TV EDID controls help the source negotiate a format that works with the attached displays.
- Passes LPCM 7.1, Dolby TrueHD and DTS-HD Master Audio without requiring a software driver.
- Metal construction provides a durable enclosure and passive heat dissipation.
Things to consider
- Every output displays the same program, so the unit cannot create independent computer desktops.
- HDR10, HDR10+ and Dolby Vision are unsupported despite the 4K60 capability.
- It cannot downscale an individual 4K output for a 1080p display, so mixed-display systems may fall back to a lower common format.
- No separate audio extractor is included for connecting legacy audio equipment.
- CEC and ARC are unsupported, and the recommended HDMI cable length is under 30 feet.
Complete specifications
Audio
Dolby Audio FormatsDolby TrueHD
DTS SupportYes
DTS Audio FormatsDTS-HD Master Audio
Connectivity
HDMI Ports5
HDMI 2 1 Ports0
HDMI Inputs1
HDMI Outputs4
HDMI eARCNo
Optical Inputs0
Video PassthroughDuplicates one HDMI input to four simultaneous identical HDMI outputs
Design & Installation
Dimensions Inches6.12 x 2.48 x 0.63 in
Weight Pounds0.573
General
Power Consumption Watts2 W
Picture
Adapter Max ResolutionUp to 4K at 60Hz
Specifications
Adapter Inputs1 x HDMI Type-A female, 1 x Mini-USB service port
Adapter Outputs4 x HDMI Type-A female with identical duplicated content
4K@30Hz 1x2 HDMI Splitter
A powered HDMI splitter that sends one identical signal to two displays at up to 4K30.
Key technology
COPY/AUTO EDID ManagementThe splitter can automatically negotiate display capabilities or copy an attached display's EDID to control the source's selected resolution and audio format.
Buyer advantages
- Duplicates one source across two displays without a computer driver, providing a simple solution for mirrored TVs or monitors.
- Supports 4K30 and common 1080p formats in a compact metal enclosure.
- COPY and AUTO EDID modes give users control over how the source negotiates display and audio capabilities.
- Passes LPCM 7.1, Dolby TrueHD, Dolby AC-3, DTS, DTS-HD and DSD audio formats.
- The included 5V power adapter provides consistent power without relying on the source device.
Things to consider
- Both outputs always show identical content, so the splitter cannot create an extended computer desktop.
- 4K output is limited to 30Hz, resulting in less fluid motion than the UHDS-104 at 4K60.
- HDCP support stops at version 1.4, preventing compatibility with sources that require HDCP 2.2 for protected 4K playback.
- HDR10, HDR10+ and Dolby Vision are not supported.
- No output-specific downscaling, audio extraction, CEC or ARC support is included.
- The maximum supported 1080p refresh rate is not consistently documented, so buyers should treat 1080p60 as the practical documented target.
Complete specifications
Audio
Dolby Audio FormatsDolby TrueHD, Dolby AC-3
DTS SupportYes
DTS Audio FormatsDTS, DTS-HD
Connectivity
HDMI Ports3
HDMI 2 1 Ports0
HDMI Inputs1
HDMI Outputs2
HDMI eARCNo
Optical Inputs0
Video PassthroughDuplicates one HDMI input to two simultaneous identical HDMI outputs
Design & Installation
Dimensions Inches2.76 x 2.36 x 0.79 in
Weight Pounds0.276
General
Power Consumption Watts5 W
Picture
Adapter Max ResolutionUp to 4K at 30Hz
Specifications
Adapter Inputs1 x HDMI Type-A female
Adapter Outputs2 x HDMI Type-A female with identical duplicated content
Which one should you buy?
The OREI SX-4C4K1080 is the best fit for productivity users who need as many as four independent external displays and can accept two 4K30 plus two 1080p60 outputs, mandatory software and higher host-system demands. The USBC2HDMI2 provides the same core extended-desktop benefit in a smaller, USB-powered two-monitor design, making it the more sensible option for a typical office desk. The UHDS-104 is the strongest distribution model for four TVs because it handles a duplicated 4K60 signal, HDCP 2.2 and 18Gbps bandwidth without a computer driver, but it cannot extend a desktop or pass HDR. The HDS-102 is the basic two-screen duplicator for 4K30 or common 1080p sources; its HDCP 1.4 limit makes it less suitable for modern protected 4K equipment. Decide first whether you need separate workspaces or identical screens, then select the required output count.
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