UGREEN exact SKU 15641
Five wired Gigabit ports, without managed-network complexity
A compact, fanless unmanaged switch for extending one router or upstream switch connection to as many as five wired network devices.
01 · Product introduction
Overview
UGREEN 15641 5-Port Gigabit Ethernet Switch (CM633) is a compact, fanless unmanaged switch for extending one router or upstream switch connection to as many as five wired network devices.
This exact-model guide separates link-rate ceilings from real throughput, explains what the entire cable or radio path must support, and states when operating-system or driver compatibility is conditional.
Research combines exact live UGREEN India product media with exact-model primary UGREEN material. Similar-looking adapters can use different chipsets, radios, speed ceilings and software.
Source reconciliation
The current manufacturer page gives hardware dimensions 101 × 65 × 27.5mm and net weight 139g; larger India measurements appear package-level. The supplied adapter is rated 5V/1A while the switch input is specified up to 5V/0.6A. Exact India material lists 9K jumbo frames. No managed VLAN, QoS, routing, PoE or passive-power claim is made.
02 · At a glance
Key features
03 · Connector clarity
Every interface and indicator explained
04 · Performance planning
Link-rate ceilings and real throughput
Every RJ45 port has a link-rate ceiling of 1Gbps. A device linked at 100Mbps or 10Mbps remains limited to that negotiated rate.
The specified 10Gbps switching capacity represents five full-duplex Gigabit links counted in both directions; it does not mean a single port can transmit at 10Gbps.
Store-and-forward switching checks each received frame before forwarding it. The listed Gigabit forwarding rate is up to 1,488,000 packets per second per port under the manufacturer's test conditions.
All internet traffic still shares the speed of the router, modem, ISP plan and uplink. Adding a switch creates more wired ports; it does not multiply broadband bandwidth.
The 2K MAC-address table records connected network endpoints. It is not a user-managed address book and provides no routing or firewall function.
05 · Complete path
What the host, cable or radio route must support
For a Gigabit link, both endpoint network interfaces and the intermediate router or switch must support 1000BASE-T.
Use intact Cat5e-or-better Ethernet cables for Gigabit. Damaged plugs, split pairs, two-pair telephone-style wiring or poorly terminated wall runs commonly negotiate only 100Mbps.
Connect one port to a router LAN port or upstream switch, then connect computers, TVs, consoles, access points or other Ethernet clients to the remaining ports.
A loop created by connecting two switch ports back into the same unmanaged network can cause a broadcast storm. Use a single uplink unless the network is deliberately designed otherwise.
The switch does not issue IP addresses. A router or other DHCP server normally provides addressing and internet access.
06 · Network behaviour
Standards, negotiation and operating roles
Verified Ethernet standards: IEEE 802.3, 802.3u, 802.3ab and 802.3x.
Auto MDI/MDIX allows ordinary straight-through Ethernet cables; a special crossover cable is not normally required.
Full- and half-duplex negotiation depends on the connected device, although modern Gigabit links operate full duplex.
Exact India material lists support for frames up to 9K. Every device across a jumbo-frame path must use compatible settings; the feature does not accelerate ordinary internet traffic by itself.
This is an unmanaged Layer-2 switch. There is no administration page, app, configurable VLAN, traffic shaping, link aggregation or router mode.
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.
07 · Device fit
Compatible devices and systems
08 · Practical value
Use scenarios
09 · Usability
Setup and usability guidance
- Place the switch on a stable, ventilated surface and confirm the supplied power adapter matches the local outlet.
- Connect the 5V power supply and check the Power LED.
- Connect a router LAN port or upstream switch to any RJ45 port using a known-good Ethernet cable.
- Connect each local wired device to another port. The corresponding Link/Act LED should illuminate.
- Check the negotiated link speed in the connected computer, router or device interface; the LED alone does not prove a 1Gbps link.
- If a port negotiates at 100Mbps, replace the cable and test the device directly before changing network settings.
10 · Software
Driver and operating-system guidance
The switch is a stand-alone Ethernet device and does not install an operating-system driver.
The connected computer or USB Ethernet adapter may still require its own network driver. That requirement belongs to the endpoint, not to this switch.
No mobile app, browser setup or firmware configuration is required for normal unmanaged switching.
IP addressing, DNS, parental controls, firewall rules and Wi-Fi settings remain functions of the router or other network equipment.
Driver discipline
Match the exact SKU, chipset, operating-system version and CPU architecture. A driver for a similar enclosure can be incompatible with the hardware inside.
11 · Verified scope
What this product does
- Adds five auto-negotiating 10/100/1000Mbps Ethernet ports to an existing wired network.
- Forwards local Ethernet traffic between connected devices using store-and-forward switching.
- Works quietly without a cooling fan and provides a separate activity indicator for every port.
- Supports ordinary mixed-speed Ethernet devices and Auto MDI/MDIX cabling.
12 · Clear boundaries
What this product does not do
- It is not a router, modem, firewall, Wi-Fi access point or DHCP server.
- It does not provide IEEE PoE or passive power over its RJ45 ports.
- It does not offer managed VLANs, configurable QoS, port mirroring, link aggregation or a web console.
- It cannot make a 100Mbps device, cable or internet plan operate at 1Gbps.
- It does not isolate untrusted devices unless another router or managed security device provides that policy.
13 · Best practice
What to do
14 · Common mistakes
What not to do
15 · Read before use
Warnings and limitations
16 · Diagnostics
Troubleshooting by symptom
17 · Exact data
Technical specifications
| Specification | Verified exact-SKU detail |
|---|---|
| Brand / model | UGREEN CM633 / SKU 15641 |
| Product type | Unmanaged, fanless desktop Ethernet switch |
| Network ports | 5 × RJ45; 10/100/1000Mbps auto-negotiation |
| Standards | IEEE 802.3 / 802.3u / 802.3ab / 802.3x |
| Cabling | Auto MDI/MDIX; Cat5e or better recommended for Gigabit |
| Switching method | Store-and-forward |
| Switching capacity | 10Gbps |
| MAC table | 2K entries |
| Jumbo frame | Up to 9K per exact India material |
| Indicators | 1 × Power; 5 × Link/Act |
| Device power input | 5V, up to 0.6A documented |
| Supplied adapter rating | 5V/1A output on exact India listing |
| Hardware dimensions | Approximately 101 × 65 × 27.5mm |
| Net weight | Approximately 139g |
| Operating temperature | 0–40°C |
| Storage temperature | -40–70°C |
Package contents
- UGREEN CM633 five-port Gigabit switch
- 5V power adapter (regional plug as supplied)
- Product documentation
Retail bundles can vary. Ethernet cables, routers, chargers, external power supplies or host adapters are not included unless they appear in the verified list above.
18 · Native collapsible answers
Product-specific FAQ
What exact model does this page cover?
This page is only for UGREEN CM633, SKU 15641, the five-port unmanaged Gigabit switch.
What is the highest stated link speed?
Each RJ45 port negotiates up to 1Gbps. The 10Gbps figure is aggregate full-duplex switching capacity, not a 10Gbps port.
Does it need a driver?
No switch driver is installed. A connected computer or USB network adapter may need its own driver.
Which hosts or network devices are compatible?
It works with standard 10/100/1000Mbps Ethernet devices such as routers, PCs, TVs, consoles, NAS units and printers.
Will it make my internet faster?
No. It adds wired ports but cannot exceed the ISP plan, router uplink or slowest link in the path.
Does it support or supply PoE?
No. SKU 15641 supplies neither IEEE PoE nor passive power through its RJ45 ports.
What do its USB or power connections actually do?
No RJ45 port is permanently assigned as WAN or uplink; connect the router LAN cable to any one port.
What cable or radio path should I use?
Use a known-good Cat5e-or-better four-pair cable for Gigabit. Cable damage or incomplete terminations often force 100Mbps.
Is warmth normal?
A mildly warm aluminium case can be normal. Keep it uncovered and unplug it if heat, smell or resets become abnormal.
What should I check first if it does not work?
Check power, Link/Act LEDs, cables and negotiated speed first; then test the endpoint directly at the router.
What is included in the box?
The verified base package contains the switch, a regional 5V power adapter and product documentation.
