Overview

The UGREEN K552 is a slim full-size wireless keyboard that pairs Bluetooth 5.4 with a 2.4GHz link. It uses a standard Japanese key layout with a numeric keypad and charges over USB-C, which makes it a practical everyday board rather than a showpiece. Anyone juggling a desktop, a tablet and a phone at one desk is the obvious audience here.
Up to three devices can be paired at once, and a dedicated switch button moves between them. The board also detects the host OS automatically across Windows, macOS, ChromeOS, iOS/iPadOS and Android, then adjusts its input mode to suit. Keys sit on a rubber-dome membrane with a fairly deep stroke, and twelve multimedia keys cover browser and media playback shortcuts. The chassis is notably thin, so it travels well.

Connectivity & Compatibility

There are two radio paths: Bluetooth 5.4 and a 2.4GHz wireless connection. Bluetooth handles the three-device pairing and switching, while the 2.4GHz route lets a desktop without Bluetooth use the board through its receiver. Because the layout is the standard Japanese arrangement, touch typists in a Japanese environment should feel at home quickly.
Charging runs through USB-C and the internal battery is a 3.7V lithium polymer cell. UGREEN rates standby at up to three months on a single charge. The full-size footprint with a numpad is offset by the slim profile, so it should fit narrower desks without much fuss.

Product Info

This sits in the mid-range of UGREEN's wireless keyboard lineup. The combination of a Japanese layout, a numeric keypad, three-device pairing and a membrane mechanism points to office and multi-device work rather than competitive gaming. Physical dimensions are 362 mm long, 120 mm wide and 18 mm tall.

Best Use Cases

  • People who move between a desktop and a tablet all day: three-device pairing plus a switch button keeps the handoff quick, though anyone chasing mechanical key feel will be disappointed.
  • Japanese-layout typists who want a thin board with a numpad: the standard arrangement and deeper stroke suit document work, while buyers prioritizing extreme portability should look at compact models.
  • Home-office and browser-heavy users: twelve multimedia keys and USB-C charging remove battery swaps, but esports players needing the fastest response should look elsewhere.

Product Disclosure (Amazon)

  • Manufacturer: Ugreen Group Limited
  • Brand: UGREEN
  • Model: K552
  • ASIN: B0FCSLL62Y
  • Note: This article covers a manufacturer-made product based on Amazon listing details.