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A compact 21-key mechanical numpad with Cherry Blossom PBT keycaps and RGB backlighting

BOYI

BOYI TD21 21-key numpad Bluetooth 5.0/2.4GHz wired hot-swap PBT keycaps Romatic Cherry Blossom

SKU CH-JY15-DBJ8J

A 21-key hot-swappable numpad with PBT keycaps offering Bluetooth 5.0, 2.4 GHz and wired connectivity

  • 21 fully programmable keys streamline workflows for gamers and professionals
  • Hot-swappable mechanical switches let you change feel without soldering
  • Three-mode connectivity: Bluetooth 5.0, 2.4 GHz wireless, and wired USB-C
  • Detachable Type-C cable and included 2.4 GHz dongle give instant plug-and-play setup
  • Durable PBT keycaps in Romatic Cherry Blossom theme resist shine and oil

21-key programmable numpad

The BOYI TD21 is a compact 21-key numeric keypad designed for gamers, programmers and professionals who need a portable, fully programmable number pad. It uses mechanical switches and offers tri-mode connectivity via Bluetooth 5.0, 2.4 GHz wireless and a detachable USB Type-C cable. The unit ships with themed PBT keycaps in a Romatic Cherry Blossom finish.

Hot-swap switches and tri-mode link

Hot-swappable sockets let you change mechanical switches without soldering, so the feel can be updated whenever you prefer a different actuation. The keypad pairs with up to two devices simultaneously across its three connection modes, and the wired USB link provides N-key rollover even when the battery is depleted. This makes it a direct upgrade for anyone currently using a fixed-switch or single-mode numpad.

Plug-and-play setup with dongle storage

No driver installation is required; the 2.4 GHz dongle and USB Type-C cable are included for immediate use. The hot-swap function works by pulling switches straight out, but excessive force can damage the socket pins. Bluetooth pairing follows standard OS procedures, and the detachable cable prevents port strain during transport.

How it compares

Measured against everything we stock in PS/2 to USB Adapters, at today’s prices. Recalculated every night.

Price $67.99
Pricier than about 85% of the 116 comparable items (median $26.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Will the 21-key layout fit in a compact desk setup?

The 21-key footprint is smaller than a 61-key board, leaving ample room beside a mouse or 65-percent keyboard.

How do I pair the 2.4 GHz dongle and avoid the common step of leaving the mode switch on Bluetooth?

Flip the hardware switch to 2.4 GHz, insert the dongle, and the link activates without software.

When will the PBT keycaps need replacement?

PBT resists shine far longer than ABS, so replacement is only needed if a cap physically breaks.

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