UGREEN 75917 AXE5400 Tri-Band Wi-Fi 6E USB Adapter (CM787)
Overview
UGREEN 75917 AXE5400 Tri-Band Wi-Fi 6E USB Adapter (CM787) is a desktop AXE5400-class wireless adapter with two adjustable external antennas, a detachable USB data cable and explicit Windows-focused support.
What it does well.
Key features
02 · At a glance
2.4 + 5 + 6GHz. AXE5400 is a rounded class label combining separate theoretical ceilings: up to 574Mbps at 2.4GHz, 2402Mbps at 5GHz and 2402Mbps at 6GHz. One client connection does not add all three bands together.
574 + 2402 + 2402Mbps. Before purchase, verify the Indian carton and product label show CM787 / 75917 and AXE5400 or Wi-Fi 6E, because another current regional product reuses the identifiers for AX3000.
Wi-Fi 6E. Indian product class: Wi-Fi 6E / AXE5400 with 802.11ax operation across 2.4GHz, 5GHz and eligible 6GHz spectrum.
WPA3-SAE. India media limits operating-system compatibility to Windows 10 and Windows 11.
Every interface and indicator explained
03 · Connector clarity
Detachable device-side USB data socket.
Supplied USB host data cable.
2 × adjustable external antennas. Angle the antennas for stable reception and keep them clear of metal obstructions; the design is high-gain but cannot overcome every wall or interference source.
Status indicator. Shows adapter/connection activity according to the installed software; it is not an signal or speed meter.
No RJ45 socket. This is a wireless adapter, not an Ethernet adapter or router.
Link-rate ceilings and real throughput
04 · Performance planning
AXE5400 is a rounded class label combining separate theoretical ceilings: up to 574Mbps at 2.4GHz, 2402Mbps at 5GHz and 2402Mbps at 6GHz. One client connection does not add all three bands together.
6GHz can provide cleaner spectrum and more wide-channel opportunities at short range, but it generally penetrates walls less effectively and requires a Wi-Fi 6E access point.
Real throughput is lower than the negotiated wireless rate because of protocol overhead, shared airtime, channel width, interference, distance, router capability and the remote service.
The supplied USB 3 path is necessary to avoid a USB 2.0 bottleneck at the higher wireless link classes.
The adapter can improve the computer's radio link; it cannot increase the broadband plan, router backhaul or remote server speed.
What the host, cable or radio route must support
05 · Complete path
Before purchase, verify the Indian carton and product label show CM787 / 75917 and AXE5400 or Wi-Fi 6E, because another current regional product reuses the identifiers for AX3000.
Use Windows 11, a Wi-Fi 6E router/access point and a country configuration that permits 6GHz to use the 6GHz band.
Windows 10 is listed for the adapter, but do not assume that means 6GHz operation; use the documented 2.4GHz/5GHz paths and current driver.
Install the software/driver package before expecting the adapter to appear, especially when the installer is presented through onboard or bundled storage.
Place the antenna base on an open desk using the supplied data cable rather than trapping it behind a metal PC enclosure.
Standards, negotiation and operating roles
06 · Network behaviour
Indian product class: Wi-Fi 6E / AXE5400 with 802.11ax operation across 2.4GHz, 5GHz and eligible 6GHz spectrum.
Backward network compatibility depends on the driver and access point; the higher Wi-Fi 6/6E features appear only when both ends support them.
Material lists WPA3-SAE security. Use WPA3 on 6GHz and prefer WPA3 or WPA2 on other bands according to router compatibility.
The India product title lists Soft AP mode. Treat availability as driver/Windows dependent and do not promise a 6GHz hotspot.
The adapter is a client radio interface, not a wireless router, mesh node or stand-alone range extender.
Ceiling, not a promise
A port, radio or USB label is a signalling ceiling. Real performance depends on the complete path, protocol overhead, local conditions and the devices at both ends.
Compatible devices and systems
07 · Device fit
Windows 11. The preferred exact-supported system, required for ordinary 6GHz Wi-Fi 6E client use together with compatible router and regional settings.
Windows 10. Listed in India media for adapter operation, principally on supported 2.4GHz/5GHz networks with the driver.
macOS.
Linux.
Desktop and laptop PCs. Require a compatible USB-A host connection through the supplied data cable and enough physical space for the antenna base.
Use scenarios
08 · Practical value
Windows 11 Wi-Fi 6E desktop. Add an eligible 6GHz client path without installing an internal PCIe card.
Positionable desktop antenna. Move the antenna base away from a metal tower and toward the access point using the supplied cable.
Congested office or apartment radio space. Use 5GHz or eligible 6GHz when a compatible router offers a cleaner channel than 2.4GHz.
Windows 10 dual-band upgrade. Use supported 2.4GHz/5GHz operation without representing Windows 10 as a guaranteed 6GHz platform.
Setup and usability guidance
09 · Usability
- Check the carton and underside label for CM787 / 75917 and AXE5400 or Wi-Fi 6E before installing.
- Obtain the Indian driver/software package and follow its Windows installation instructions.
- Connect the supplied USB 3 host data cable directly between the computer and antenna base; do not substitute a charging-only lead.
- Place the base upright on an open surface, then adjust both antennas without forcing their hinges.
- In Windows Wi-Fi settings, select the intended SSID; use Windows 11 plus a compatible 6GHz network for Wi-Fi 6E.
- Confirm WPA3/WPA2 settings, obtain an IP address and test near the router before evaluating the final desk position.
Driver and operating-system guidance
10 · Software
India media limits operating-system compatibility to Windows 10 and Windows 11.
The adapter requires its driver/software environment; do not advertise unconditional driver-free operation.
6GHz Wi-Fi 6E client operation requires Windows 11 support in addition to a compatible access point and permitted regional spectrum.
Windows 10 listing does not establish 6GHz support; describe it as supported adapter operation on compatible 2.4GHz/5GHz networks.
Do not use the current China CM787/75917 AX3000 package or driver description as proof that the Indian AXE5400 radio has identical regional firmware.
Driver discipline
Match this SKU, chipset, operating-system version and CPU architecture. A driver for a similar enclosure can be incompatible with the hardware inside.
What this product does
11 · scope
- Adds exact-variant tri-band Wi-Fi 6E networking to a supported Windows computer.
- Provides separate theoretical link ceilings up to 574Mbps, 2402Mbps and 2402Mbps across 2.4/5/6GHz.
- Uses a detachable USB 3 data cable and two positionable external antennas.
- Supports WPA3-SAE and Windows-dependent Soft AP functionality as listed for the Indian product.
What this product does not do
12 · Clear boundaries
- It does not deliver 5,400Mbps to one transfer or use all three band maxima simultaneously.
- It does not make Windows 10 a guaranteed 6GHz client platform.
- It is not an Ethernet adapter, stand-alone router, mesh extender or USB charging station.
- Its device-side USB data socket does not provide laptop charging, video or peripheral pass-through.
What to do
13 · Best practice
Recommended. Verify the carton says AXE5400/Wi-Fi 6E because the model identifiers are reused regionally.
Recommended. Use Windows 11 and a compatible Wi-Fi 6E router for 6GHz.
Recommended. Use the supplied USB 3 data cable and place the antenna base in the open.
Recommended. Install the Indian driver/software package.
Recommended. Prefer WPA3 and keep Windows, the driver and router firmware current.
What not to do
14 · Common mistakes
Avoid.
Avoid. Do not promise 6GHz on Windows 10, macOS or Linux.
Avoid. Do not add 574, 2402 and 2402Mbps as one simultaneous transfer.
Avoid. Do not connect a charger to the adapter's device-side USB data socket.
Avoid. Do not bend the antennas beyond their intended movement or cover the base during sustained use.
Warnings and limitations
15 · Read before use
Warning / limitation 1. 6GHz availability depends on national regulation, Windows 11, access-point support and the network configuration.
Warning / limitation 2. Wireless performance varies with distance, building materials, interference, channel width and router design.
Warning / limitation 3. A Soft AP shares the computer's network and can create a security exposure; use a strong password and follow workplace policy.
Warning / limitation 4. Stop use if the cable, connector or antenna hinge is damaged or the enclosure becomes abnormally hot.
Warning / limitation 5. Regional identifier reuse is a purchasing risk: verify the physical AXE5400/Wi-Fi 6E label before relying on tri-band claims.
Troubleshooting by symptom
16 · Diagnostics
6GHz SSID is missing. Verify Windows 11, Wi-Fi 6E router mode, permitted regional settings, current driver and adequate proximity to the access point.
Adapter is not detected. Reconnect the supplied USB 3 cable, try a direct USB-A port and install the Indian CM787 software.
Connection falls back to 5GHz or 2.4GHz. Check signal, router band steering, 6GHz security and OS support; band choice is negotiated, not forced by the AXE5400 label.
Speed is below the link class. Separate PHY rate from application throughput, then verify USB 3, channel width, router capability, distance and service limits.
Software identifies AX3000 instead of AXE5400. Stop and verify the physical carton, label, regional hardware and downloaded package before applying any firmware or driver.
At a glance.
- Brand / model
- UGREEN CM787 / SKU 75917, Indian AXE5400 variant
- Adapter type
- USB tri-band Wi-Fi 6E client adapter
- Bands
- 2.4GHz / 5GHz / eligible 6GHz
- 2.4GHz link ceiling
- Up to 574Mbps
- 5GHz link ceiling
- Up to 2402Mbps
- 6GHz link ceiling
- Up to 2402Mbps
- Class label
- AXE5400, rounded sum of separate band ceilings
- Host connection
- USB 3 through the supplied detachable host data cable
- Antenna
- 2 × adjustable external antennas
- Security
- WPA3-SAE listed
- Operating roles
- Station; Soft AP subject to Windows/driver limits
- OS scope
- Windows 10 / Windows 11
- 6GHz OS requirement
- Windows 11 plus compatible router and region
- Not supported in art
- macOS / Linux
17 · data
Retail bundles can vary. Ethernet cables, routers, chargers, external power supplies or host adapters are not included unless they appear in the list above.
Questions buyers ask.
What model does this page cover?
This page covers the Indian CM787 / SKU 75917 AXE5400 Wi-Fi 6E variant; verify that wording on the carton because another region reuses the identifiers.
What is the highest stated link speed?
The separate ceilings are 574Mbps at 2.4GHz, 2402Mbps at 5GHz and 2402Mbps at 6GHz; one connection does not add them.
Does it need a driver?
Use the Windows software/driver. The page does not claim unconditional driver-free operation.
Which hosts or network devices are compatible?
Will it make my internet faster?
No. It can improve the PC's radio link but cannot exceed the router, ISP plan, congestion or remote server.
Does it support or supply PoE?
No. It is a Wi-Fi adapter with no Ethernet or power-output role.
What do its USB or power connections actually do?
The base's detachable socket is for USB data and adapter power only; it does not charge a laptop, output video or host accessories.
What cable or radio path should I use?
Use the supplied USB 3 cable, place the antenna base in the open and use a Wi-Fi 6E router for 6GHz.
Is warmth normal?
Some warmth is possible during sustained traffic. Stop if heat, odour, resets or cable damage becomes abnormal.
What should I check first if it does not work?
Verify the physical AXE5400 label, correct Windows version, driver, USB 3 connection, band/security settings and router compatibility.
What is included in the box?
The configuration includes the antenna base, two attached antennas, an approximately 1m detachable USB host data cable and documentation; verify the device-side connector because India text and live art name it differently.