The last one, thank goodness, of twenty-two PC's received from the IT department. Received them for next years Computing Students to work on - take apart; reassemble; add parts to; and attempt to get working.

Having been checking them over and, as is obviously needed here, giving them a darned good cleaning out! This is an air intake fan. There are four other additional fans in each PC. Not all are this grotty.

Back was giving nasty warning twinges on the way home tonight. Just in time for the holiday season, once again...