Question 1

I have a new Coolermaster case with two USB 3 ports in one of the drive bays, with a 20 pin female usb adapter.  Unfortunately, my motherboard does not have a 20 pin male connector.  Does this card have a 20 pin male connector that I can use with my existing setup?

Accepted Answer

Yes this model has the connector you need.  I too have a Coolermaster case and I use this connector to connect the cord you referenced.  Windows 8.1 loaded the software automatically.  Remember you'll need a molex power cable to power the ports as well, which should be standard on your case power supply.

Question 2

Does the front I/O bay work with an external 3.5" device bay? I can't find anything that specifically says that. It looks like it does, but I want to make sure. I only have an external 3.5" device bay available, and it's better if I have the ports in front. My case is "ENYLE ENY-313 ATX MID TOWER CASE/USB 3.0/Black Int". PS - My MOBO doesn't support USB 3.0 or I'd use the front port that came w/the case.

Accepted Answer

It comes with a metal plate that will fit into a floppy drive bay, converting it to front USB 3.0 ports

the plate is shown in the image gallery, last picture.
Says "front USB 3.0 panel" below

My case had a cable with existing front access USB 3.0
I plugged that into the Silverstone PCI card.
Working great so far

Brand	Silverstone
Model	SST-EC03S-P

Type	PCI Express to USB Card
External USB Ports	2x USB Ports
Standard	USB 3.0
Data Transfer Rate	USB 3.0(5Gbit/s), USB 2.0(480Mbit/s), USB 1.1(12Mbit/s)
Operating Systems Supported	Windows XP, Vista, 7(32bit/64bit)
Specifications	Color: Silver Form factor: Single lane(x1) PCIe gen 2.0 USB 3.0 controller: NEC uPD720200 *USB Ports: Dual port USB 3.0 support (one internal connector) Compatible with USB 2.0 USB bus power output: 5Vdc / 900mA

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Silverstone PCI Express Card w/ USB 3.0 Internal Connector and USB3.0 Front IO ports - Silver Model SST-EC03S-P

Silverstone SST-EC03S-P

PCI Express to USB 3.0 Card

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Item#: 9SIBF8AKJA0161