You have a 4+4 connector, it is keyed properly for being that. The second half of the 4+4 doesn't have keyed pins because you can use either half for a 4 pin motherboard and if they keyed it for the 8 pin slot the second half wouldn't fit in a 4 pin board. The connector and spot are keyed properly, it is fine. http://www.playtool.com/pages/psuconnectors/connectors.html
You have a 4+4 connector, it is keyed properly for being that. The second half of the 4+4 doesn't have keyed pins because you can use either half for a 4 pin motherboard and if they keyed it for the 8 pin slot the second half wouldn't fit in a 4 pin board. The connector and spot are keyed properly, it is fine. http://www.playtool.com/pages/psuconnectors/connectors.html