After three or four orders from MODDiy.com that had no problems, I received an order that had one. I had ordered some punch-down type straight SATA power connectors for a future project. The product illustration on their webpage for the item showed that it came with two caps: one for use with five wires and on for use with four wires. I needed both styles of caps but, when I received the order, all I received were the five wire caps. I contacted them once a day for five days and they have been completely ignoring me.
I strongly recommend you all avoid using them due to their non-existent post sale customer service.