Photographers covering weddings in Naivasha, journalists filing copy from county assemblies, and students at Strathmore, JKUAT and the University of Nairobi keep hitting the same wall. Modern handsets and thin notebooks ship with USB-C ports only, while most Kenyan offices, cyber cafés and printing shops still run on full-size USB flash drives. The UGREEN US378 closes that gap for KSh 700 instead of forcing a hardware upgrade. Security technicians copy DVR footage onto a phone on site. SACCO clerks shift receipt files between an ageing desktop and a new handset. The UGREEN US378 handles all of it without drivers or software setup.

Unlike other electronics retailers in Kenya stocking unbranded OTG dongles that drop connections halfway through a copy, the UGREEN US378 carries a documented 5Gbps rating, a tinned copper core, and UGREEN product code 6941876213054 printed on genuine packaging. Buyers across Kenya report that a 4GB video file moves onto a phone in roughly 40 seconds when paired with a quick USB 3.0 flash drive, where a USB 2.0 adapter needs two to three minutes on the same file. Mascom International backs the UGREEN US378 with a 6-month warranty. Walk into our Kimathi Street shop to test it against your own phone, or order for countrywide pay-on-arrival delivery.

The UGREEN US378 turns one USB-C port into a full-size USB 3.0 socket, so hardware built for older computers plugs straight into newer devices. The male USB-C plug goes into your phone, tablet or notebook. The female USB-A socket then hosts a flash drive, external SSD, keyboard, mouse, card reader, wired game controller, USB microphone or printer cable. No driver installation, no app, no configuration screen. Android and Windows mount the connected drive within a second or two, and files open in your normal file manager.

Any phone with a USB-C port that supports OTG works, and that covers almost every recent handset sold in Kenya. On the Apple side, iPhone 15, iPhone 16 and iPhone 17 series all use USB-C and read flash drives through the Files app. Samsung Galaxy S and A series, Xiaomi, Redmi, Oppo, Tecno, Infinix and Google Pixel handsets support OTG as standard. Older iPhones with Lightning ports will not work with the UGREEN US378, since the plug shape and protocol differ entirely.

The adapter itself supports 5Gbps, which is USB 3.2 Gen 1, roughly ten times the ceiling of USB 2.0. Real-world speed is set by the slowest part of the chain, which is almost always the flash drive. A budget 32GB drive might sustain 25MB per second. A quality USB 3.0 drive or portable SSD reaches 120MB to 400MB per second through this adapter. Photographers moving a 20GB card of RAW images notice the difference immediately, cutting a 15-minute wait down to about three minutes.

Yes, and this is one of the most common reasons Kenyan buyers pick up the UGREEN US378. A full-size keyboard plugged into a tablet turns it into a workable writing station for coursework or field reports. A mouse makes spreadsheet edits on a phone-to-monitor setup far quicker than tapping. Wired Xbox and generic USB controllers register on Android games without pairing. USB microphones, card readers, DVR sticks, barcode scanners and older USB printers also detect correctly through the adapter.

No, and that distinction matters. This is an OTG adapter, meaning power flows outward from your phone to the connected accessory, not inward. The USB-A socket supplies up to 10 watts at 2 amps to whatever you attach, which is enough for flash drives, keyboards, card readers and most bus-powered portable SSDs. Charging a handset needs a wall adapter and a USB-C cable instead, both stocked separately at Mascom International. Expect your phone battery to drain slightly faster while a drive stays connected.

Portable SSDs and 2.5-inch bus-powered hard drives generally work, drawing their power from the host device through the adapter's 10-watt output. A Samsung T7, SanDisk Extreme or WD My Passport mounts on most USB-C notebooks without complaint. Phones are more variable, because a handset limits how much current it releases to accessories. Desktop 3.5-inch drives with their own mains adapter also work fine. If a drive fails to spin up on a phone, connect it to a notebook instead.

The 15-centimetre length is deliberate. It keeps a heavy flash drive from hanging off your charging port and straining the socket, yet leaves enough slack to sit comfortably beside a phone on a desk or matatu seat. The nylon braid resists the fraying that kills cheap rubber-jacketed dongles inside a few months, and aluminium alloy shells hold the connector shape after repeated plugging. At 5 grams, the UGREEN US378 lives in a wallet, camera bag or laptop sleeve unnoticed.

Almost every Android handset released in Kenya since 2018 supports OTG, and USB-C iPhones from the 15 series onward do too. Check your phone settings under Connected Devices or USB Preferences for an OTG toggle, or download a free OTG Checker app from Google Play. Some very low-cost handsets omit the feature entirely. The simplest route is to bring your phone into Mascom International on Kimathi Street and test the UGREEN US378 across the counter before you pay anything.

Three ways to order:

Every unit comes with the 6-month Mascom warranty stated above.

Buyers across Kenya rely on Mascom International for accurate product specifications, current Kenyan market pricing, and after-sales support handled directly from our Nairobi CBD shop.