This article covers PFU HHKB Professionalシリーズ キートップセット墨 左上印字 (英語配列モデル) PD-KB400KTB.

Overview

The PFU HHKB Professional Series Keycap Set (model PD-KB400KTB) is a genuine replacement keycap set designed specifically for English-layout HHKB Professional keyboards. It includes 60 black keycaps with top-left printed legends, identical in material and shape to the original keycaps shipped with the keyboard. This set is ideal for refreshing worn or damaged keycaps, or for switching to blank keycaps for touch-typing practice. Each set comes with a keycap puller and an instruction manual, making DIY replacement straightforward. The keycaps are the same as those used on standard HHKB models, ensuring consistent feel and durability.

Connectivity & Compatibility

This keycap set is compatible with the following HHKB Professional series models in English layout: HHKB Professional HHKB Professional2 HHKB Professional2 Type-S HHKB Professional BT HHKB Professional HYBRID Type-S HHKB Professional HYBRID * HHKB Professional Classic It is not compatible with Japanese-layout HHKB models or any other keyboard brand. Always verify your keyboard model before purchasing.

Product Info

Released around 2014 and still in production, the PD-KB400KTB is widely available through PFU Direct and Japan. The typical retail price is approximately ¥6,600 (tax included). While this is higher than third-party keycap sets, the genuine PFU part guarantees perfect fit and identical typing feel. The package includes 60 keycaps, a keycap puller, and an instruction manual. Warranty coverage follows PFU's standard policy for accessories. Market positioning: This is a premium OEM accessory for HHKB enthusiasts who prioritize compatibility and build quality over cost. It sits at the top tier for HHKB keycap replacements.

Best Use Cases

Long-time HHKB users whose keycaps have become shiny or faded. Replacing with genuine parts restores the original look and feel. Touch-typing learners who want to remove legends from their keyboard. The set can be used to create a blank keycap configuration. * Second-hand HHKB buyers who want to refresh the keyboard's appearance and hygiene. Combined with cleaning, a new keycap set makes the keyboard feel like new.

Product Disclosure (Amazon)

  • Manufacturer: HHKB
  • Seller: PFUダイレクト
  • Fulfilled by: PFUダイレクト
  • ASIN: B00FPH4K5O
  • Note: This article covers a manufacturer-made product based on Amazon listing details.