Overview

The Buffalo BSTK100BK is a compact wired keypad built for people who want number entry within easy reach. Many notebooks leave out a dedicated numeric block, so every figure typed into a spreadsheet or accounting tool turns into a cursor trip. This little pad solves that by adding a column of digits over a single USB connection.
It carries 19 keys with a 19mm key pitch and membrane switches. The body measures 90 x 24 x 145mm and weighs roughly 110g, so it sits on the desk without claiming much real estate. Power comes from the bus, meaning no batteries or wall adapter are involved, and the attached cable runs about 0.8m.
The Tab key is what separates this from a plain number pad. Sending digits and jumping between fields can both happen on the same side of the keyboard, which matters when you are cycling through form entries or moving across table cells all day.

Connectivity & Compatibility

This is a wired USB device. Buffalo lists support for Windows 10, 8.1 and 7, and it works as a plug-in peripheral rather than something that needs a separate driver install.

  • Interface is USB, with bus power supplying the device
  • Supported operating systems are Windows 10, 8.1 and 7
  • The cable is about 0.8m long, enough to reach a side port on most notebooks
  • Operating environment is listed as -10 to 60 degrees Celsius and 20 to 85 percent humidity without condensation
    The low 24mm profile means it lines up beside a main keyboard without getting in the way. A 19mm pitch is close to what full-size desktop keyboards use, so your fingers do not have to relearn spacing.

Product Info

Buffalo released this model on September 18, 2016, and it has stayed in the lineup for years. Pricing sits in the budget bracket, which makes it an easy add-on for anyone who just needs more input keys. It is not aiming at premium typing feel or extra features; its job is to fill a missing numeric block cheaply and reliably.

Best Use Cases

  • Notebook users who work in spreadsheets or accounting software: the 19-key layout adds a digit column over USB, and the Tab key keeps cell navigation on one hand.
  • Anyone protecting desk space: at 90mm wide and about 110g, it can live in a drawer when not in use, which suits people who do not want to swap to a full-size keyboard.
  • Not for buyers chasing mechanical feel or gaming extras: with 19 membrane keys, macro buttons and lighting are simply outside what this product offers.

Product Disclosure (Amazon)

  • Model: BSTK100BK
  • ASIN: B01L8VIA6U
  • Note: This article covers a manufacturer-made product based on Amazon listing details.