I want to buy a 2nd power cable for a 22Hanns-G PC monitor (hg221a) but do not know what or where to buy one - any pointers
This is a standard item. Go to an electrical/electronic/computer shop with the old one.
Outdated CPU, awful video card. Expect to run everything recent on low, and not comfortably. Also, this is obviously prebuilt, and there's no mention of a wifi card or usb wifi dongle so without either, no you cannot do wifi with this computer. As for supporting the monitor, the video card has connectors for VGA and DVI, and most old and modern monitors have those connectors and wires for it so you should be fine monitor-wise.
