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 the two:

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

FK-747 which uses the standard FK-747 case, Alps SKCM Blue or Omron B3G-S Amber¹⁾ 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 towards the back of the keyboard with a lock-light sticker in it's 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 serial number sticker (74706290 on the documented example), separate QC and country of origin stickers, a AT/XT switch cutout and 6 total feet: 4 non-slip feet and two flip-out feet.
Internally, the bottom case has a 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 a FK-747-0 model number and a 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 a 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 a S/N sticker, a QC sticker and a country of origin sticker.
Currently, there are no known internal photos of the FK-747's bottom case.

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

The keycaps used on the standard FK-747 are the same Focus made ABS pad-prints 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 switches 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.