Handic Software Multi-Switch

Hi all.

I came into posession of a swedish-made serial switch-box for the C64 (share one devices between up to 8 computers). Very much like this one: https://www.richardlagendijk.nl/cip/mix/item/handic_vic-switch/en and in a nice shape with original box.

However my unit has some differences to images I found online:

- The sticker on the front says Multi-switch (not Vic-Switch), and the box says it’s for Vic-20, C64, 16, Plus/4 or 128 machines. (However the two-page manual only speaks of Vic-20 and C64)

- My unit does not have AC mains input, but a barrel connector that looks somewhat bodged-in. It’s center negative. (The manual shows a mains input)

- Inside the unit there is an extra PCB mounted over the mainboard and a big ribbon cable connecting it to the bottom side of the main board.

- Inside the unit there is no mains transformer as in images online. The rectifier is on the board, but the ac side of it is not connected at all, and the DC input is wired straight to the DC side of it, going to the two parallel 470uF/25v electrolytics. Then the power rails continue to the 7815 and 7805 regulators’ inputs.

I got the unit without power supply (also non-tested due to that). Looking at the board it seems that I should use a DC power supply of something between 15v - 25v. Does this sound correct?

Here are some pictures of my unit: https://postimg.cc/gallery/2jv4u1jjw/

Cheers,
Ville