US Patent 7304841 Connection arrangement of blade server

The present invention is to provide a connection arrangement of a blade server comprising a case having a plurality of holes at a front of the case, a first circuit board and a second circuit board both in the case, and a plurality of walls disposed between the first circuit board and the second circuit board for forming a passage therebetween having two ends open to the front and the rear of the case. An electronic device (e.g., hard disk drive) is adapted to electrically connect to the second circuit board by insertion, and a channel corresponding to the passage is then formed between the electronic device and the first circuit board for improving heat dissipation performance thereof.