Overview

The Buffalo BSTK135BK is a wired numeric keypad that plugs straight into a Windows PC's USB Type-A port. It is aimed at people who spend their day in spreadsheets on a laptop, or who want to keep a compact desktop keyboard and still have a dedicated number pad within reach.
What sets it apart from the usual budget keypad is the inclusion of a Tab key and a 00 key. Tab lets you move between cells or form fields without reaching back to the main keyboard, and pairing it with Enter speeds up building tables. The 00 key cuts the double-tap needed when entering large figures in budgets and accounting work.
Typing comfort comes from a 19mm key pitch, a slightly angled chassis, and rubber feet on the base to keep the unit planted. Because the connection is wired, there is no battery to run down and no pairing to redo. The footprint is small: roughly 5 inches long, 3.58 inches wide and 0.94 inches tall, at about 0.25 pounds, so it sits quietly beside a laptop.

Connectivity & Compatibility

The keypad connects over a wired USB Type-A link. Windows PCs are the stated target, and no separate driver installation is required — plug it in and the number keys are ready.
A notable design choice is that the keypad does not sync its NumLock state with the host computer. That means it can keep entering digits even when the laptop's own NumLock is off, and it avoids the accidental number input that happens when the host setting takes over. Anyone who has paired a keypad with a tenkeyless board will recognize the problem this addresses.
Keep in mind that a USB Type-A port is mandatory, so a slim notebook with only USB-C will need an adapter. The layout and Tab behavior are built around the Windows environment, which is worth knowing before you buy.

Product Info

Check the retailer's page for the latest price. The model number is BSTK135BK and the brand is Buffalo.
Its market position falls between generic cheap keypads and premium models with customizable layouts. Holding the price down while adding practical differentiators — Tab, 00, and the non-syncing NumLock — says a lot about who this is for. It suits people who want a small productivity gain without a large outlay.

Best Use Cases

  • Laptop users who build Excel tables and budgets daily: the Tab and 00 keys let cell navigation and long figures stay on the keypad, cutting trips back to the main keyboard. Not for gamers who rarely type numbers.
  • Owners of compact tenkeyless keyboards: set it beside the board only when numbers are needed, and the non-syncing NumLock means you never touch the host setting. Less useful if you already use a full-size keyboard all day.
  • Accounting and bookkeeping staff entering figures into fixed forms: the wired link never drops out, and the slim, non-slip body keeps the desk clear. Not the right pick if you want one device to handle every key.

Product Disclosure (Amazon)

  • Model: BSTK135BK
  • ASIN: B0GFBS1ZRM
  • Note: This article covers a manufacturer-made product based on Amazon listing details.