Focus FK-747

The Focus FK-747 was a AT layout keyboard produced by Focus Electronics.

The FK-747 is currently documented to come in two different models with major differences between them:

FK-747-0, with a case marked FK-7700-U, Omron B3G-S White switches and Omron made PBT dye-sub keycaps.

FK-747, which uses the standard FK-747 case, Alps SKCM Blue switches ¹⁾ or Omron B3G-S Amber²⁾ switches and Focus made ABS pad-print keycaps.

Both the FK‑747 and FK‑747‑0 use a two‑part case with an ABS plastic top and a painted steel back plate; both assemblies consist of a PCB and a painted steel switch mounting plate.

Externally, the upper section above the top row of keys has a ridge sloped facing toward the back of the keyboard with a lock-light sticker in its top-right corner.
Internally, there are standoffs with brass screw inserts for fastening the two case pieces together, a FK-7700-U marking, plastic pegs for aligning the assembly and the flip-out feet mechanism.

Externally, the bottom has a serial number sticker (74706290 on the documented example), separate QC and country of origin stickers, an AT/XT switch cutout and six total feet: four non-slip feet and two flip-out feet.
Internally, the bottom case has an AT/XT switch daughter board, a piece of tape for preventing the PCB from shorting on the bottom and what appears to be a grounding point for the assembly and DIN-5 cable.

The top of the PCB has a Focus logo with a barely visible FK-747-0 model number below the mounting plate.
The bottom of the PCB has another Focus logo with an FK-747-0 model number and an FK-727 model number below that.

Externally, it has a long sticker above the top row with blocks for writing F key functions and transparent windows for the lock-light bank.
Internally, it has threaded plastic standoffs for fastening the two case pieces together and standoffs with brass inserts for the assembly.

Externally, it has an AT/XT switch with an AT/XT sticker next to it and four feet in total: two non-slip feet and two flip-out feet with hooks for routing the DIN-5 cable. The back also has an S/N sticker, a QC sticker, and a country of origin sticker.
Currently, no internal photos of the FK-747's bottom case are known.

The top of the PCB has an FK-747 marking visible through a plate cutout under the spacebar.
The bottom of the FK-747 PCB has a Focus logo and an FK-727/747 marking.

The keycaps used on the standard FK-747 are the same Focus made ABS pad-printed keycaps typically found on early Focus keyboards such as the FK-727 and FK-555.

On the FK-747-0, the keycaps are PBT dye-subs made by Omron, which are usually found on Omron's B5G-S series of keyboards.

FK-747-0 photos taken by reddit user u/jensgk and used with permission under the CC BY-NC-SA 4.0 license.