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HARDWARE ARCHIVES // PART RECORD

[ KEYBOARDS AND INTEGRATED POINTING DEVICES // IDENTIFIED SKU ]

HHKB Professional HYBRID Type-S (PD-KB800BS)

Compact Topre electrostatic-capacitive 60% keyboard with silent Type-S switches and Bluetooth/USB-C.

Original local keyboard schematic for HHKB Professional HYBRID Type-S (PD-KB800BS); not a product photograph
ORIGINAL LOCAL REFERENCE SCHEMATIC // NOT TO SCALE

MODEL IDENTIFICATION: PD-KB800BS — charcoal / stamped US variant. Confirm the full PD-KB code and keycap legend on the underside. This archive entry identifies a real manufacturer product/variant; physical labels and dated manuals supersede generalized family descriptions.

Model specifications

Catalog subcategoryKeyboards and integrated pointing devices
Exact model / SKUPD-KB800BS — charcoal / stamped US variant. Confirm the full PD-KB code and keycap legend on the underside.
Layout and key arrangement60-key HHKB layout with compact Control placement and no dedicated function row, arrows or numeric keypad; functions are layer-accessed. This page covers the charcoal stamped Type-S model.
Switch type / mechanismTopre electrostatic-capacitive switches, Type-S silenced construction, nominal 45 gf class. It is not a conventional Cherry MX mechanical-switch board; key feel and service parts are specific to the HHKB design.
Interface and protocolBluetooth wireless (up to four paired hosts) or USB Type-C wired connection; two AA cells power wireless operation. Type-C is not a promise of USB-C-to-USB-C compatibility with every cable/host.
Key rollover / anti-ghostingManufacturer specifies N-key rollover over USB and 6-key rollover over Bluetooth; do not treat the wireless limit as a host defect.
External dimensionsApproximately 294 × 120 × 40 mm; manufacturer lists roughly 540 g without batteries. Treat these as model-family dimensions and verify against regional frame/keycap variant.
OS and host compatibilityManufacturer lists Windows, macOS, iOS and Android support. USB HID typing is host dependent; Bluetooth pairing and modifier/keymap choices differ by OS. Keymap Tool availability is OS/version dependent.
Revision / regional caveatDo not conflate PD-KB800BS with the non-Type-S HYBRID, Classic, Type-S Snow or Japanese-layout versions. Frame material, legends, keymap, firmware, Bluetooth behavior and packaging differ by SKU/region.

Preservation and service notes

Keep the paired-device state, DIP-switch/keymap settings and two AA cells documented. Use HHKB-specific service guidance; do not lubricate or interchange Topre assemblies as if they were MX switch modules.

Record the as-found SKU/revision, host OS and version, connection method, firmware, keymap and test method. Do not infer rollover or compatibility from the connector alone; clearly separate unpublished manufacturer specifications from tested observations.

Manufacturer sources

  1. HHKB Professional HYBRID product informationManufacturer specifications, variants and connection modes.
  2. HHKB support and FAQManufacturer pairing, keymap and product support reference.

Manufacturer pages can be revised or retired. Retain the applicable dated manual/specification with the physical equipment record.