IT technicians wiring server cabinets in Upper Hill, procurement officers setting up shared printers across open-plan floors, university students at Strathmore and USIU running external drives from a desk two metres from the tower, and photographers offloading wedding shoots at Karen venues all hit the same wall: the cable in hand stops half a metre short of the port. Buying a longer replacement cable costs three to six times more than joining the two cables already sitting on the desk. The UGREEN US381 closes that gap for KSh 800, turning two spare male-ended cables into one continuous line with no cutting, splicing, or soldering.

At Mascom International, we're seeing steady demand for the UGREEN US381 from network installers, cyber café operators, and computer repair shops that got burned by unbranded plastic couplers which drop the link mid-transfer or crack at the port after a month. Unlike other electronics retailers in Kenya who stock generic no-name couplers pulled from mixed bins, Mascom International carries the genuine UGREEN part with its aluminium shell and printed model marking. Users consistently report that the US381 holds a steady connection on external hard drives where cheaper couplers fell back to USB 2.0 speeds. Walk into our Kimathi Street store and test it on your own cable before paying.

The UGREEN US381 is a coupler with two USB Type-A female ports, so it joins the male ends of two separate USB cables into one longer run. It does not add ports like a hub and it does not convert one connector type into another. Think of it as a straight joiner: cable one plugs into the left side, cable two plugs into the right, and data passes through untouched. It also lets a short cable reach a desktop tower sitting under a desk.

The US381 carries the full USB 3.0 SuperSpeed ceiling of 5Gbps, roughly ten times the 480Mbps limit of USB 2.0. Actual throughput depends on the slowest link in the chain. A USB 3.0 external SSD copying a 20GB video folder typically moves at 300 to 400MB per second through the coupler, finishing in about a minute. A mechanical portable hard drive settles nearer 100MB per second because the spinning platters, not the adapter, set the pace.

UGREEN rates the US381 for a total combined run of about 1 metre when both cables are USB 3.0, and up to 5 metres when one side is a USB 2.0 cable running at lower speed. Stay inside those figures and the connection holds. Push a USB 3.0 chain past 1 metre and the drive may disconnect at random, throw copy errors, or quietly drop to USB 2.0 speed. For longer reaches, use a powered extension cable instead.

Yes. The US381 is backward compatible with USB 2.0 and USB 1.1 devices, so an older HP LaserJet, a wired Logitech keyboard, a card reader, or a Wi-Fi dongle all pass through without configuration. Those devices simply run at their own native speed rather than 5Gbps. Many Kenyan offices still run mixed hardware, with a 2015 printer sharing a desk with a 2024 laptop, and the coupler bridges both generations from the same 800-shilling part.

The US381 passes up to 2A of current, which covers bus-powered devices such as 2.5-inch portable hard drives, flash disks, webcams, and desk fans. Phone charging works but stays at basic speed, since the coupler carries whatever the source port supplies and adds no fast-charge negotiation of its own. For a 3.5-inch desktop hard drive with its own mains brick, the coupler handles only the data line, which is exactly what that setup needs.

Cheap couplers cut cost on the contact pins and the shell. Thin tin-plated pins lose grip within weeks, so the drive disconnects every time someone nudges the desk, and plastic bodies crack at the seam. The UGREEN US381 uses an aluminium alloy housing that spreads heat during long copy sessions and resists the flex that snaps plastic. UGREEN also prints the 20119 model code on the unit, so you can verify what you bought rather than guessing.

Network technicians joining patch runs behind racks, accountants linking a backup drive to a tower parked under the desk, videographers extending a card reader to reach an editing bay, and school computer labs where a shared printer sits three desks from the host machine. Boda-based repair technicians also carry one in the toolkit, because a coupler plus two short cables replaces the need to stock long cables in five different lengths.

No drivers, no software, no configuration. Plug the two cables in and the operating system detects the connected device exactly as if the cable were a single unbroken length. Windows 10 and 11, macOS, Linux distributions, ChromeOS, Android through OTG, and games consoles all recognise pass-through hardware immediately. The coupler carries no chip of its own, which is why it stays this affordable and why nothing can go out of date on the software side.

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Every unit comes with the 6-month Mascom warranty stated above, with claims coordinated at our Nairobi CBD service desk.

Buyers across Kenya rely on Mascom International for accurate specifications, current Kenyan market pricing, and direct after-sales backing on every connectivity accessory we stock.