UGREEN US121 USB 2.0 Active Extension Cable 25M is in stock at Mascom International for KSh 7,000, available at Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD. The UGREEN US121 carries a built-in FE1.1s low-power signal booster chipset that regenerates the USB signal along the full 25-metre run, holding transfer rates at up to 480Mbps. It terminates in a USB-A male plug at one end and a USB-A female port at the other. The cable is brand new and sealed in UGREEN retail packaging, finished in black, with tin-plated 2824AWG copper conductors inside.
Security installers, IT technicians, and office administrators across Nairobi buy the UGREEN US121 when a device sits too far from the computer. Ordinary USB leads stop behaving past roughly 5 metres, which is why a webcam mounted in a boardroom ceiling or a wireless network adapter placed near a window drops out mid-session. The UGREEN US121 closes that gap without a powered hub or a second PC parked next to the device. Church AV teams, school computer labs in Kiambu and Machakos, and CCTV crews wiring shop counters along Moi Avenue all hit the same 5-metre ceiling.
Unlike other electronics retailers in Kenya that stock unbranded extension leads with no booster inside, Mascom International supplies the UGREEN US121 as genuine UGREEN stock with triple shielding and gold-plated contacts. Installers consistently report that passive 20-metre leads fail intermittently once a printer or wireless adapter draws real current, while the chipset version holds its link. At Mascom International, we're seeing steady demand from Nairobi CBD offices rewiring conference rooms. Walk into our Kimathi Street shop to test the UGREEN US121 against your own device, or order for pay-on-arrival delivery anywhere in Kenya.
Common Questions About the UGREEN US121 USB 2.0 Active Extension Cable
Should I buy the 25-metre length or something shorter?
Buy the length your longest route actually needs, plus about 2 metres of slack. At KSh 7,000 the 25-metre UGREEN US121 works out to roughly KSh 280 per metre, against about KSh 440 per metre on the 5-metre version, so covering real distance costs less per metre here. Measure the route through ceiling voids and around door frames rather than the straight-line gap. Joining two shorter leads end to end does not hold a stable link.
Does the connection still hold 480Mbps at the far end?
Yes. The FE1.1s repeater rebuilds the electrical waveform partway along, so hardware at the far end sees the same USB 2.0 timing a short lead would produce. Practical throughput on a file copy typically lands between 25 and 35 megabytes per second, which is normal for USB 2.0 at any length. Bulk video pulls from a recorder feel slower than a USB 3.0 link would, but the connection stays up instead of dropping mid-transfer.
How should a 25-metre cable be routed through a building?
Run it inside trunking or conduit wherever the route is exposed, and leave a slack coil at both ends. Keep about 30 centimetres of separation from mains power cabling, even though the foil and braid layers already block most interference. Avoid sharp 90-degree corners and use a gentle curve instead. In church halls and open-plan floors, clip it along the skirting every 2 metres so no loose span sits where people walk.
Will a USB webcam or security camera stream properly at this distance?
USB webcams and USB security cameras stream well over the full length, and this is the most common request our Kimathi Street team handles. A standard 1080p webcam feed sits comfortably inside the USB 2.0 ceiling. Where the camera is power-hungry or the host port is weak, add the 5V 2A adapter so the booster draws its own supply. Cameras using RJ45 network ports need Cat6 cable instead, so bring the model number and we will confirm.
Can the cable run between two floors of a building?
Yes. Twenty-five metres comfortably covers a two-storey route in most Kenyan commercial buildings once you count the vertical drop plus horizontal routing at each end. A typical floor-to-floor riser consumes 4 to 6 metres before any horizontal distance begins. Support the vertical section with ties near the top so the connector never carries the hanging weight. For total routes beyond 30 metres, a different approach is needed and our Kimathi Street team will advise.
What if my device draws a lot of power at the far end?
Printers, external hard drives, and wireless network cards pull more current than a host port can comfortably push down a long span. The symptom is hardware that appears then disappears, or never mounts at all. The fix is the optional 5V 2A adapter, which feeds the booster directly and frees the host port to supply the device. UGREEN specifically recommends this pairing for higher-draw hardware on long routes like this one.
Does it work with VR headsets and console camera modules?
Room-scale VR sensors, Xbox Kinect units, and PlayStation camera modules are exactly the use cases UGREEN lists for this cable class. Placing a sensor across a large room rather than beside the PC gives noticeably better tracking coverage. Delay added by the booster is negligible for tracking hardware. Headsets that specify USB 3.0 bandwidth will not operate here, so check whether yours calls for USB 2.0 or USB 3.0 before ordering.
How does this compare with a USB-over-Ethernet extender box?
An extender box converts the signal onto Cat6 and can span 50 metres or more, but it costs considerably more, needs power at both ends, and adds two more parts that can fail. For a 25-metre span, one continuous lead with nothing to power in the middle installs faster and costs less. Choose the extender box only when your total route genuinely passes 30 metres or structured cabling already exists in the building.
Technical Specifications
Signal Transmission and Data Rates
- USB 2.0 standard supports transfer rates up to 480Mbps, sufficient for cameras, printers, scanners, and storage drives
- Built-in FE1.1s low-power signal booster chipset regenerates data instead of simply passing a weakening signal along
- Active repeater design pushes the working distance from the 5-metre USB 2.0 limit out to 25 metres
- Backward compatible with USB 1.1 devices such as older keyboards, mice, and industrial measurement hardware
- Chipset runs cool during extended sessions, so overnight CCTV recording and long print jobs stay stable
- Male USB-A input plugs into the host computer while the female USB-A output receives your device
Cable Construction and Interference Shielding
- Tin-plated 2824AWG copper core lowers transfer impedance, which keeps the signal strong over the full length
- Triple shielding combines foil, braid, and ground layers to block EMI and RFI from nearby power cabling
- Four-core internal structure separates data and power lines so signals do not interfere with each other
- Internal metal wire braid resists pulling and dragging when the cable is fished through ceiling conduit
- Flame-retardant PVC outer jacket and ABS connector housing resist abrasion against wall edges and floor traffic
- Black finish hides against skirting boards and ceiling tiles in offices, shops, and church halls
Connector Design and Physical Durability
- Gold-plated contacts on both connectors are rated for more than 10,000 insertion cycles before measurable wear
- Moulded strain relief at each connector protects the solder joints from repeated flexing at the plug point
- Female port accepts any standard USB-A device without an adapter, keeping the connection direct and simple
- Cable stays flexible in cold highland conditions and does not stiffen at Nairobi or Limuru overnight temperatures
- Shipping weight of roughly 1,085 grams reflects the copper mass rather than filler material inside the jacket
- Retail packaging measures approximately 18 x 18 x 6 centimetres, coiled for storage without kinking the conductors
Device and Operating System Compatibility
- Works with printers, scanners, external hard drives, webcams, USB security cameras, and USB headsets
- Wireless network cards and 3G or 4G USB dongles run well at distance, especially with the optional adapter
- Gaming hardware including Xbox Kinect, PlayStation camera units, and wired controllers connects without configuration
- VR headsets such as Oculus Rift and HTC Vive use this cable class for room-scale sensor placement
- Windows, macOS, Linux, and Chrome OS all detect connected devices with no driver download required
- Television sets, projectors, and USB display adapters accept the extended connection for classroom and boardroom setups
Length, Power Options and Installation
- Fixed 25-metre length covers a full office floor, a church sanctuary, or a two-storey residential run
- Optional 5V 2A power adapter extends usable reach to about 30 metres and supports higher-draw hardware
- Power adapter is sold separately and is recommended for printers, network adapters, and video devices
- Not intended for charging phones, tablets, or power banks — this is a data extension lead only
- Daisy-chaining two units without external power is not supported and causes intermittent device dropouts
- Install through trunking or conduit where possible, avoiding sharp 90-degree bends that stress the conductors
Practical Deployment Across Kenyan Sites
- Retail counters along Moi Avenue and Tom Mboya Street use it to link barcode scanners to back-office PCs
- School computer labs in Kiambu, Machakos, and Kajiado extend shared printers across a classroom without moving desks
- Church AV teams route webcams from balcony positions down to the streaming laptop at the sound desk
- Hotel front desks connect passport scanners and receipt printers placed away from the reception terminal
- Home users position a USB Wi-Fi adapter near a window for better Safaricom or Airtel indoor signal reception
- Warehouse and go-down operations in Industrial Area link handheld scanners to a stock terminal across a bay
Package Contents
- UGREEN US121 USB 2.0 Active Extension Cable, 25 metres, black
- Product documentation and quick reference card
- Mascom International receipt and 6-month warranty card
Note: The 5V 2A power adapter for 30-metre operation is not included in the retail packaging. Mascom International stocks compatible 5V 2A adapters separately, and our Kimathi Street team can match one to your installation length and device type before you leave the shop.
Warranty
The UGREEN US121 USB 2.0 Active Extension Cable carries a 6-month Mascom International warranty on manufacturing defects under normal use. Coverage includes chipset failure, connector faults, and internal conductor breaks that are not caused by physical damage during installation. Our Nairobi CBD service desk handles claims directly, without shipping the cable back to a distant processing centre.
Where to Buy the UGREEN US121 in Kenya
The UGREEN US121 USB 2.0 Active Extension Cable 25M is available now at Mascom International, Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD. Walk in Monday to Saturday, 9:00 AM to 7:00 PM, and test the cable with your own webcam, printer, or wireless adapter before you buy. Available colour: black.
Order through any of these:
- Phone/WhatsApp: +254 708 852 521
- Email: info@mascomintl.com
- Website: www.mascomintl.com
Mascom International ships across all 47 Kenyan counties with pay-on-arrival delivery, so you inspect the sealed packaging and confirm the length before any money changes hands. Nairobi and its environs receive same-day delivery. Nakuru, Eldoret, Kisumu, Mombasa, Thika, Nyeri, and every other county receive the cable within 1 business day. Mandera, Wajir, Marsabit, Lamu, Tana River, and Turkana receive delivery within 2-3 business days.
Buyers across Kenya rely on Mascom International for accurate specifications, current Kenyan pricing, and genuine UGREEN stock backed by the 6-month warranty stated above. Our team advises on cable length, power adapter pairing, and installation routing before you commit to a purchase.
