I will have my Zotac Zbox ID82 Plus mini-PC which until recently ran my observatory. I have now switched to a desktop as I specifically needed a serial port.... but I also used this in the field at pretty much all the SGL/Kelling parties...
It has:
Dual Core i3-220ghz CPU
8GB RAM (will take up to 16)
300GB Western Digital HDD (can be swapped out for larger capacity)
2 x USB 3
4 x USB 2 (supports USB Charging in S1, S3, S4 or S5 via top or front 'yellow' USB ports)
Gigabit LAN
Wifi (802.11n)
Bluetooth v3.0
8 Channel Digital Audio
Stereo Analog Audio
HDMI & DVI Output
MMC/SDHC/XD/SD Card Reader
It comes with a 19" monitor, DVI Cable, Zotac power cable, monitor power cable, mouse, keyboard, original driver discs and manuals and I will include one of FLOs Red Screen filters. It does not have the original remote control and I don't have a big enough bag to carry it all in (but it will be safely transported to the SP).
The PC is mounted on the rear of the monitor with a VESA mounting plate. The dimensions of the PC itself are 188mm x 188mm x 44mm - it's small enough to be mounted close to the tripod/mount if you so wished.
It has a clean, fully patched but inactivated Windows 64-bit installation - you will need your licence key!
There is no other software installed, but I will happily pre-load with ASCOM, EQMOD, star catalogues, Stellarium or CdC, DSS - or any other of the popular free astro software.
Pics to be uploaded later...
I will be in the Pavillion POD (on the non-electric field) but I'll be about Fri-Mon - or I can bring over to your pitch...
I think discussions around the £175 mark would be sensible
Also, I have a collection of various adapters (mostly T2 I think) that I seem to have acquired - most of which I have no idea what they are for!! I'll take some pics and add some (hopefully) meaningful descriptions - see if anyone wants to swap for a couple of them gold-coloured coins!