UGREEN US121 USB 2.0 active extension cable is now in stock at Mascom International for KSh 2,200, stretching any USB-A connection by a full 5 metres. The UGREEN US121 carries a built-in FE1.1s low-power signal booster chipset that holds data at the full USB 2.0 rate of 480Mbps across the entire length. Gold-plated USB-A male and USB-A female connectors sit at either end, rated for more than 10,000 plug cycles. Mascom International stocks the UGREEN US121 brand new and sealed at Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD, with countrywide delivery to all 47 counties.
Offices across Kenya keep running into the same problem: the printer sits four metres from the desk, the CCTV recorder is on the far wall, and the standard 1.5-metre USB cable in the box will not reach. Plain passive extensions past 3 metres drop packets, so scanners stall mid-page and external drives disconnect. The UGREEN US121 solves that with an amplifier chip inside the male connector housing. Accountants running receipt printers, cyber café operators managing shared scanners, security installers wiring DVR keyboards, and university students positioning webcams for online classes all get a working connection where a passive cable fails.
Unlike other electronics retailers in Kenya who stock unbranded 5-metre extensions with no chipset and no model number, Mascom International supplies the genuine UGREEN US121 with its FE1.1s booster verified and its 2824AWG tin-plated copper core intact. Users consistently report that cheap passive cables of this length work for a mouse but fail the moment a hard drive or printer is connected. At Mascom International, we are seeing steady demand from Nairobi CBD offices and Mombasa Road workshops that have already replaced two or three failed cables. Walk into our Kimathi Street store to test the UGREEN US121 on your own device, or order for delivery anywhere in Kenya.
Common Questions About the UGREEN US121
What does the UGREEN US121 active extension cable actually do?
The UGREEN US121 extends a USB-A port by 5 metres while keeping the signal strong enough for real data work. A chip called FE1.1s sits inside the male plug and rebuilds the electrical signal partway along the run, which is what the word active means here. Passive extensions simply add copper and let voltage drop off. That is why a passive 5-metre cable often runs a mouse fine but drops an external hard drive mid-transfer.
Can the UGREEN US121 charge a phone over 5 metres?
No. The UGREEN US121 is a data extension cable, not a charging cable, and UGREEN states this plainly. The booster chipset passes data and only enough current to run low-draw peripherals such as keyboards, mice, flash drives, and webcams. Plugging in a phone will not produce useful charging speed and is outside the cable's design. For charging at distance, Mascom International stocks dedicated UGREEN charging cables and USB-C power leads separately at our Kimathi Street counter.
How is the FE1.1s chipset different from a plain passive extension cable?
The FE1.1s chip regenerates the USB signal rather than just carrying it further. USB 2.0 was specified for cable runs up to 5 metres total, and a passive extension added to an existing device cable pushes past that limit immediately. The result is dropped packets, devices that vanish from Windows, and transfers that stop halfway. The UGREEN US121 restores signal timing so the connection holds at 480Mbps end to end.
Which devices work with the UGREEN US121 in a Kenyan office or home?
Printers, flatbed scanners, external hard drives, USB hubs, Wi-Fi dongles, 3G and 4G modems, webcams, keyboards, mice, USB headsets, card readers, and game controllers all connect through the UGREEN US121. Cyber cafés use it to place a shared laser printer across the room. Security installers reach DVR and NVR units mounted high on a wall. Home users extend a Safaricom or Airtel USB modem toward a window for better signal reception.
Does the UGREEN US121 need drivers or an external power supply?
Neither. The UGREEN US1211 is driverless and bus-powered, drawing what it needs from the host USB port. Plug it in and Windows, macOS, Linux, or ChromeOS recognises the attached device immediately with no software install. For high-draw peripherals connected through longer daisy-chained runs, UGREEN offers an optional 5V 2A adapter, but a single 5-metre US121 does not require it in normal desktop and office use.
Is the UGREEN US121 worth KSh 2,200 against cheaper unbranded extensions?
Yes, for anything beyond a mouse. Unbranded 5-metre extensions in Nairobi retail around KSh 600 to KSh 900 and almost never contain a booster chip. Buyers typically replace them twice within a year once a printer or drive starts disconnecting, landing near the same total spend with far more frustration. The UGREEN US121 uses 2824AWG tin-plated copper with triple shielding against electrical interference, and it carries a real model number you can verify.
Can two UGREEN US121 cables be joined for a longer reach?
UGREEN's active extension range supports chaining, and the US121 family reaches roughly 30 metres when an optional 5V 2A power adapter feeds the extra length. In practice, most Kenyan offices needing more than 5 metres are better served by the 10-metre, 15-metre, or 20-metre US121 versions. Mascom International can advise on which length suits your layout and confirm current stock on WhatsApp before you order.
How does the UGREEN US121 hold up to daily handling and Kenya's dust?
The outer jacket combines ABS connector housings with flame-retardant PVC, and a metal wire braid inside resists pulling and dragging across a floor. Gold-plated contacts resist the corrosion that coastal humidity in Mombasa, Diani, and Malindi causes on bare-tin connectors. The gold plating is rated beyond 10,000 insertion cycles, which suits shared office setups where staff unplug devices daily. Keep the female end off dusty floors to protect the contacts.
Technical Specifications
Core Function and Data Transfer
- Extends any USB-A connection by 5 metres, reaching printers, scanners, and recorders placed across a room
- Transfers data at the full USB 2.0 rate of 480Mbps, enough for scanning, printing, and file copying
- Backward compatible with USB 1.1 devices, so older keyboards, modems, and card readers still work correctly
- Male USB-A on one end, female USB-A on the other, matching standard peripheral cables already in use
- Data-only design, confirmed by UGREEN, so the cable is not intended for charging phones or tablets
- Model reference US121, sold under UGREEN part number 10319 for the 5-metre black version
Signal Booster Chipset and Cable Construction
- FE1.1s low-power booster chip regenerates the USB signal, preventing the dropouts that plague passive extensions
- Chip housing stays cool through long working sessions, unlike cheaper repeater cables that heat under sustained load
- 2824AWG tin-plated copper conductors lower transfer impedance, keeping the electrical signal clean across the full length
- Triple shielding using foil, braid, and ground blocks interference from fluorescent lighting, motors, and nearby power cables
- Four-core internal structure separates data and power lines so signals do not bleed into each other
- Driverless operation means no software install on any supported computer, which matters on locked-down office machines
Device Compatibility and Operating Systems
- Works with Windows, macOS, Linux, and ChromeOS without additional drivers or configuration steps
- Supports printers, flatbed scanners, external hard drives, and USB hubs used in Kenyan offices daily
- Handles Wi-Fi dongles and Safaricom, Airtel, or Telkom USB modems moved toward a window for reception
- Connects keyboards, mice, USB headsets, card readers, and webcams for desks positioned away from the tower
- Compatible with game controllers and VR headset cables that need extra reach from a console or PC
- Suits CCTV DVR and NVR units, letting a USB keyboard or mouse reach a wall-mounted recorder
Power Behaviour and Connection Limits
- Bus-powered from the host USB port, requiring no wall socket for a single 5-metre run
- Low-draw peripherals such as mice, keyboards, and flash drives operate without any additional power source
- High-draw devices on chained runs benefit from UGREEN's optional 5V 2A adapter, sold separately
- Chained US121 cables reach roughly 30 metres total when that optional adapter feeds the extended length
- Not rated for charging, so phone and tablet charging should use a dedicated UGREEN power cable instead
- Each connection point adds slight signal loss, so use the shortest US121 length that covers your distance
Build Quality and Daily Durability
- Gold-plated contacts rated beyond 10,000 insertion cycles suit shared office desks where devices change hands
- Gold plating resists the corrosion that coastal humidity in Mombasa, Diani, and Malindi causes on connectors
- ABS connector housings with flame-retardant PVC jacket resist abrasion from chair wheels and desk edges
- Internal metal wire braid keeps the cable flexible while resisting pulling and dragging across office floors
- Black jacket hides scuffs and dust marks better than light-coloured cables in busy Nairobi CBD workspaces
- Cable coils neatly for storage and reuse when a workstation is relocated between rooms or floors
Practical Deployment in Kenyan Workspaces
- Places a shared laser printer across a cyber café floor without repositioning the host computer
- Reaches wall-mounted CCTV recorders in shops and warehouses where the equipment sits above head height
- Extends a webcam to a tripod for online classes at Kenyatta University, Strathmore, or USIU
- Moves a USB modem toward a window in Kilimani or Kileleshwa flats where indoor signal drops
- Lets accountants position a receipt printer at a counter while the PC stays under a desk
- Frees a laptop from sitting beside a scanner during long document digitisation runs for KRA filings
Package Contents
UGREEN US121 USB 2.0 active extension cable in black, 5 metres, with the FE1.1s booster chipset built into the male connector housing. Product documentation and Mascom International's 6-month warranty card ship with every unit. Note: the optional 5V 2A power adapter for chained runs is not included. Mascom International stocks UGREEN 5V 2A adapters, USB hubs, and the 10-metre, 15-metre, and 20-metre US121 lengths separately at our Kimathi Street counter.
Warranty
The UGREEN US121 carries a 6-month Mascom International warranty on manufacturing defects under normal use. Our Nairobi CBD service desk handles claims directly, without couriering the cable back to a distant centre. Buyers across Kenya rely on that desk for straightforward replacements when a genuine fault appears.
Where to Buy the UGREEN US121 in Kenya
UGREEN US121 is available now at Mascom International, located at Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD. Visit the store Monday through Saturday, 9:00 AM to 7:00 PM, to plug the UGREEN US121 into your own printer, scanner, or modem and confirm it works before paying. Available colour: black.
Order through any of the following:
- Phone/WhatsApp: +254 708 852 521
- Email: info@mascomintl.com
- Website: www.mascomintl.com
Mascom International ships the UGREEN US121 across all 47 Kenyan counties with pay-on-arrival delivery, so you only pay once the cable reaches you. Nairobi and its environs receive same-day delivery. All other major cities and towns, including Nakuru, Eldoret, Kisumu, Mombasa, and Kakamega, receive next-business-day delivery. Mandera, Wajir, Marsabit, Lamu, Tana River, and Turkana receive delivery within 2-3 business days.
Every unit is covered by the 6-month warranty detailed above, with claims coordinated at our Nairobi CBD service desk. Mascom International serves customers nationwide with accurate specifications, current Kenyan pricing, and honest advice on which cable length actually fits your setup.
