How to quickly swap between characters on multiple PCs?

[khabel]

How do I quickly swap between characters to loot items, hand in quests etc?

Do i need to a use KVM switch or have an extra mouse per PC?

[Gallo]

Until a few days ago, I had 1 main PC that ran 2 characters, and 3 other cheapo PC's attached to a KVM and 1 monitor, 1 mouse, and 1 keyboard.

All you have to do is hit the KVM and it switches control of the mouse/keyboard/monitor between the other PCs. Not ideal for PvP, but fine for turning in quest items.

[Lost Ninja]

You could also try Synergy, as long as you don't want to use it to adjust the camera on the alt PCs it works fine.

[Xzin]

If you hardware box, you could run 5 pcs and 5 monitors and simply slide your hand to a new mouse and glance over to the other screen.

Synergy, multiplicity, multibox, separate mice, a "kvm" (laggy) are all viable.