Why no auxiliary power connector?

[Synomenon]

Just got this card:
Asus U3S6
http://www.asus.com/product.aspx?P_ID=lGYmelQ8mJvPtYTv

It has two USB3.0 ports and two SATA III ports. Anyone have any idea why a card like this does not have an auxiliary power connector (4-pin molex, SATA, or floppy power connectors)?

Does a PCIe 4x slot provide more power than a PCIe 1x slot?

 

[Ross Ridge]

Does a PCIe 4x slot provide more power than a PCIe 1x slot?

Yah, sorta. Both can supply 25W, but a card in 1x slot can only use 10W at startup until it requests more. The motherboard can theoretically deny this request, so a 1x card shouldn't assume it'll able to get full 25W.

 

[Synomenon]

The U3S6 is a PCIe 4x card so maybe that's why they didn't put an auxiliary power connector on it.